Sandbox / M.U.G.E.N

For the cleanup thread.

Everything in red does not describe M.U.G.E.N by Elecbyte (and it's update WinMUGEN) content and should be considered to be removed, especially due to Real Life Troping and There Is No Such Thing as Notability.

By default M.U.G.E.N has only a single fighter, Kung Fu Man, with a minimalistic backstory, while everyone else are fan-made.

"Edits" refer to fangames made in M.U.G.E.N engine, examples from which should either get own page or not be listed at all. Since most Edits are Depending on the Author, no character can necessarily be examples of any trope.

•    '80s Hair: Bebum Ryo.   
•    Achievement System: Parodied with Nostalgic Ballz, who has over 50 achievements, that range from simple ("Wanna play a game", Control Nostalgic Ballz), to outlandish ("WHY.JPG", fight against a My Little Pony: Friendship Is Magic protagonist), to really obtuse ("HEY YOU", fight K' and mimic any of his normal moves as he does it)(Nostalgic Ballz's sprites were traced from K')   
• Action Bomb:
  •    Alphys can summon Mettaton NEO, who explodes and damages enemies when hit.   
  •    The Creeper is a playable character whose sole ability is to explode on the opponent for extremely massive, often One-Hit Kill damage. If that fails to kill the opponent, it loses.   
  •    The A-Bomb is a Lethal Joke Character that's an atomic bomb. Its sole attack nukes the entire screen for an unblockable unavoidable One-Hit Kill, and unlike the Creeper it can use this without dying. That said, several characters are able to survive and even beat it.   
  •    That Guy can explode at any time (Even when being comboed), though it's Cast from Hit Points.   
• Action Initiative: Like most Fighting Games, attack priority returns as a mechanic, and it's possible to code attacks with higher or lower priority (or even infinite priority such as an Invulnerable Attack).
•    Action Politician: Senator Lieberman.   
•    Actual Pacifist: SCP-999 has no method of dealing direct damage at all. Instead, they win by making opponents too happy to fight — opponents get a separate "Happiness meter" that increases when touching or being affected by SCP-999's "attacks", and if that fills up they're forced to Happy Dance which counts as a KO.   
• Adaptational Badass:
  •    Pingu, Garfield, Homer Simpson, Princess Peach...   in general, any character who was a non-combatant in their original source material can throw down like never before in M.U.G.E.N.
  • If character edits are included, then already strong characters can become even more badass.    Even just focusing on Mario, there are a good deal of edits of him that can take down characters of much higher strength, like Rare Akuma.   
  •    Out of all the SCP Foundation anomalies, we have SCP-066. It has a One-Hit Kill in its loud Beethoven music attack, which will one-shot even the likes of cosmically empowered characters.   
• Adaptation Inspiration: The variety of characters adapted to M.U.G.E.N is wide, most of them not just adapted from fighting games, there're character adapted from other games, mostly platformers, but there're others exceptions like being adapted from RPG    (like Shippu no Reon from Samurai Shodown RPG) and even cancelled characters (like HoboCop from ClayFighter games for Nintendo 64.)   
•    Adaptational Curves: Due to their custom sprites being designed to resemble The King of Fighters' artstyle, MUGENHunter's Sonic the Hedgehog characters have far more defined musculature compared to the cartoony proportions they canonically have.   
• Adaptational Wimp:
  • Inversely, some characters have different versions that are much weaker than the source material (whether it be intentional or because they're shoddily made)   , some to the point where even The Kid can kill them.   
  •    Orochi is a strange case. While there are many versions of him that are absurdly powerful, there are just as many that turn him into a completely wack joke filled to the brim with Japanese memes while screaming "ARIEN!". And then there's versions that make him both deadly and a bizarre joke...   
  •    HelloMyNameIsAAA's Mathrus has an alternate .def known as "Lesser Mathrus", which reduces the character to this (when they are otherwise more Brought Down to Badass).   
  •    There are several powerful SCP Foundation characters that are far weaker in M.U.G.E.N. than they are in their canon. Examples include SCP-682, the indestructible, adaptive reptile who can be outright killed via reversal custom states and cheapies, SCP-2317-K, the massive world-ending Eldritch Abomination who's much smaller here and can be beaten and even thrown around by Badass Normal characters, and both SCP-3999 and SCP-3812, high-level Reality Warpers who show far less destructive capabilities here^note In 3999's case, it's justified as the actual character being played as is Researcher Talloran (with 3999 serving as an Assist Character), most likely being forced to fight everyone in MUGEN as a form of torment by 3999. There's even a composite version of SCP-001 which includes the Scarlet King, the Gate Guardian, and the Sun from "When Day Breaks"... and the group is just about as strong as a regular character.   
• Aerith and Bob: When you have a crossover between as many games as can be imagined (and original characters), this is going to happen.
• A.I. Breaker:
  • Some types of characters (e.g., mob-type characters, massive boss characters) have a tendency to confuse AI-controlled characters.
  •    The Stupid Little Drill Tank has a tendency to cause many AIs to attempt to block its unblockable drill, dealing a huge 200 damage in the process.   
  •    One Kung Fu Man edit, AK Man (short for A.I. Killer Man), invokes this trope by completely shutting off opponent AI and leaving them helpless^How? It constantly sets itself to state 5150 (the "dead" state) before switching back to its previous state, and many AIs turn themselves off when they detect an opponent in the 'dead' state.. There are still a few characters that can beat him, though.   
•    Alien Abduction: One of Warner's Roger's hypers involves him summoning a beam that abducts the opponent.   
• Amazing Technicolor Battlefield: When projectiles, clothing, and the background tend to be all the colors of the rainbow, this is bound to happen. Even drab urban settings or grim Mortal Kombat stages can get colorful real quick.
• Amazing Technicolor Population: With custom palettes, this is possible for just about anyone.    The character literally named "Ms. Fanservice" (actually a joke edit of Yoko) has blue, dark blue, red, and gray-skinned schemes. This does not even get into the characters who are already technicolor, or extremely broken characters such as the infamous "retarded" Peter Griffin (who has a new color scheme for just about every sprite thanks to a lack of any loaded palettes).   
• Anachronism Stew: When you have characters from fighting games that take place during different time eras, this happens.
•    Anthropomorphic Food: The Dancing Banana, a dancing banana with arms and legs. It is also a surprisingly dangerous fighter.   
• April Fools' Day:
  •    There is a tradition in the M.U.G.E.N community about releasing Joke Characters on this day to fool players. Many such characters are surprise characters that people do not expect, while others that are supposed WIPs are fake, and a few only make the release post in forums but have no download. Most of these releases (the real ones, anyway) are available for this day only, then they aren't. At Mugen Free For All, there is a compilation with some of the few AF chars that were ever saved.   
  •    SCP-999 by Ironcommando initially started out as a conventionally-undefeatable April Fools Lethal Joke Character, being undamageable while only sporting a single "attack" in hugging the enemy. However, the author decided to make them into a Mechanically Unusual Fighter by making them defeatable while giving them more moves and better graphics/animations.   
• Artificial Stupidity:
  • Several characters lack an AI, which makes them use the MUGEN Engine's AI. This consists of them using random moves and attacks for the most part, which usually tends to be ineffective compared to a custom made AI.
  • Many characters, even those with perfect AI, can break when fighting mob-type opponents    such as the Alien Queen's xenomorph swarm, the Biohazard, and the Mad Gear Gang. Many AIs also don't avoid (or try to guard) the Stupid Little Drill Tank's unblockable drill, taking huge damage in the process.   
  • If a character can charge their energy gauge and their AI is poorly coded, chances are they'll do nothing but charge up for the entire match.
• Ascended Extra: Due to the nature of the game, it's possible to play as extremely minor characters and give them the same level of relevance as established main characters.    For example, DoodleBob, Nasty Jack and Julie all only appeared in one episode each at the time of their creation, but can go toe-to-toe with the likes of SpongeBob, Pooh, Ami and Yumi here.   
• Assist Character:
  • Some characters have built-in assist characters (usually referred as Strikers, the name for such characters in The King of Fighters). Some have them because they had them in their source game, but the majority of characters with built-in Strikers have them because of the M.U.G.E.N engine's limitations.
  •    Zeeky H. Bomb takes this up to eleven. Almost all his attacks are assist characters from the Demented Cartoon Movie, and the only attacks that actually involve himself are his two deadliest hypers.   
  •    The Outlaws from SquashedFlat's Texas In Trouble are this to Texas complete with Ass Kicks You, but it’s a double edged sword as they can hurt Texas as well.   
  • The Uno Tag and Add004 Systems lets you do this with many characters.
• Ass Kicks You:
  •    One of Wario's aerial attacks has him hit the opponent with his butt.   
  •    Homer's strong kick has him smashing the opponent with his ass.   
• Attack of the 50-Foot Whatever:
  • This is doable    in the vein of Apocalypse from X-Men vs. Street Fighter   , so long as there is a proper application of art and hitboxes.    This is bizarrely averted with Godzilla and Gundam fighting characters, though there are some stages that allow you to do this (with, strangely enough, Godzilla and Gundam stages). The same goes for Evangelion and Primal Rage characters.   
  •    Also oddly averted with SCP-2317-K, a 200 kilometer-tall Eldritch Abomination. It's larger than most characters, but still a far cry from its original size.   
  • It is possible to edit the .def file of literally any character you have, and most of them have a "scale" option. This can result in you beefing up the size, and therefore hitboxes and attacks, of anyone.    A fifty-foot-tall Ryu from Street Fighter who is so tall that he is going off screen? Par for the course in M.U.G.E.N.   
• Author Appeal: There's various characters in the community that are made to suit the maker's personal tastes. Expect several references, cosplay, and fanservice if you're playing a character that isn't a carbon copy of another fighting game.
• Awesome, but Impractical: Many new screenpacks are High Resolution and have stylistic portraits and icons in their select screen and lifebars, but most characters don't have portraits or icons designed with them in mind. Therefore, you must use a (hopefully provided) select screen template, and manually add them in as well. It's an easy task for a small roster, but almost impossible for a bigger roster!
• Background Music Override: It's entirely possible to have a character play a music track that replaces the stage's normal music (provided it has any).    Examples include:   
  •    RicePigeon's Yuuka Kazami during her Original Master Spark super   
  •    Luka Megurine during her various super moves.   
  •    SCP-999 replaces the stage music for the rest of the fight with "Happy Happy Joy Joy" if it successfully makes an opponent dance.   
  • Both Bowling Ball and Evil Spirit Incarnate/The Scyther replace the stage's music for the entire fight.
• Back Stab:    Literally for The_None's Segalow, who has a Level 3 Super where he grabs at the opponent and, if successful with the grab, stabs them. If this is done when the opponent is facing him, it does moderate damage...but if it connects from behind, it does massive damage. Segalow does have elements of The Spy, after all.   
• Badass Adorable:
  •    Ranging from moeblobs of various anime (Haruhi and Konata were massively popular in their heyday) to, of course, ponies from My Little Pony: Friendship Is Magic.   
  •    Special mention goes to Derpy Hooves' Quick Draw attack with various guns, including a BFG! Behold!   
  •    Thanks to Blazblue Cross Tag Battle, Team RWBY can join in on the fun!   
  •    SCP-999 the adorable orange blob "fights" by making the opponent too happy to battle!   
• Badass Normal: Anyone who does not throw fireballs/shoot lasers/mutate/use magic can beat up homicidal robots, killer aliens from outer space, evil psychic projections made from two mutants that happens to be bigger than a skyscraper, actual Gods, and Mike Tyson. Kung Fu Man is one of the normals, since he does not have a single projectile attack, although he does have inexplicable Double Jumping ability.
• Bait-and-Switch Boss:
  •    Gay Bahamut/Primeus was originally released under the cover of "SSB Yukari".   
  •    Later, Suwako's Hat was released as Suwako_RP.   
• Batman Can Breathe in Space: M.U.G.E.N characters can breathe in stages located in the space.
• Battle Aura:    This is common when characters power up and/or use Heat / Blood Heat.   
• Beyond the Impossible: There are characters who can win a match before the match even starts, something that never occurs in any other Fighting Game. It is also a literal breaking of the game's rules, in the sense that their code overloads the game to the point where the opponent fails to load and is thus defeated.
• Big Bad: Suave Dude is the main antagonist of vanilla MUGEN and the one responsible for kidnappping Kung Fu Man's girlfriend and rallying all of the other characters in the roster against him. Although he never made a physical appearance for years    until he was made into a full character by Masukenpu-kun   .
• Bloody Murder:
  •    Giygas' fatalities are jacked from Eternal Champion's Overkills—but they are somehow much more scary, even though they are relatively untouched straight rips.   
  •    Noroko can shoot blood forward.   
  •    Zero is here too.   
• Blue Means Cold:    Blizzard has ice powers and he has bluish-black hair, blue skin, and blue pants.   
• Boomerang Comeback:    Dancing Banana's Bananarangs will fly to the opposite end of the screen, and if avoided/blocked on the way will stick there for a short while before flying back in his direction for a second chance at hitting the opponent.   
• Boring, but Practical: The "template"/default character that comes with the game, Kung Fu Man. He lacks any projectile moves or special particle effects, simply using punches and kicks as a Badass Normal. However, his basic moveset with specials, supers, a throw, a Double Jump, and a Defend Command is adequate enough to take on the more flashier opponents if the player uses him well.
• Boss Rush:    The NES Ninja Gaiden bosses have been made into a boss rush of its own.   
• Break Meter: Some characters have this.    For example, Evil Kung Fu Man will get dizzy if hit enough times in short order, rendering him vulnerable   . Characters with Guard Meters,    or P-Card/ Stand meters    also have this.
• Brought Down to Badass:    HelloMyNameIsAAA's version of Mathrus isn't a deadly virus that can brick computers like the original character, but it's still insanely overpowered and nigh impossible to defeat with normal fighters.   
• Bruce Lee Clone:    Bruce Lee himself is in there.   
• Calling Your Attacks:    When Garfield fires hot dogs, he says "Hot dog" in a Dull Surprise voice with each one he fires. Not to also mention Ryu, Morrigan, and the other characters that involve this trope.   
• Car Fu:    Being a sentient car, Lightning McQueen uses himself as a weapon, with several attacks having him driving or crashing into his opponent.   
• Cast from Hit Points:
  •    Homer Simpson's "Riot of The Beer" mode. It makes all of his attacks much stronger, and gives them greater priority, but using it costs half of his remaining health.   
  •    The Creeper's sole attack to explode is cast from all its hit points.   
  •    Zeeky H. Bomb's Zeeky Words. If he manages to pull it off, it causes an unblockable, unavoidable nuclear explosion that instantly kills all opponents, but it also deals 500 damage (half the HP of a normal character) to himself and his ally which means that he can kill himself with it if not careful.   
  •    That Guy's explosion attack causes him to, well, explode, which can be used to escape more damaging combos, but it takes off a fair chunk of his health. It can't be used when on low HP, so he can't kill himself with it, thankfully.   
• Chainsaw Good:
  •    Sadako look-alike and general horror movie tribute character, Ella. Duke Nukem has a special palette that gives him the Doomguy's chainsaw (after he blows up Doomguy and steals it).   
  •    Evil Kung Fu Man's foot turns into a chainsaw.   
• Changing Clothes Is a Free Action:    Warner's Roger is notorious for using his disguises instantly while attacking.   
• Chekhov's Gunman:    A meta-example. Anyone and anything encountered outside of M.U.G.E.N has a good chance of eventually being adapted to it, especially if they're from a 2-D Fighting game.   

• Chromosome Casting: Because of the engine's customization abilities, players can create a game with an all-female roster (Or at least, female-dominated), or an all-male roster.
• Colony Drop:    In an inversion to the Chuck Norris fact where he selects one lucky kid to throw into the sun, he does the opposite here and drops the sun on the opponent instead. Naturally, it's a One-Hit Kill.   

• Combos: Combo attacks are extremely common among characters, given that it's a Fighting Game engine. There's an in-built code to make your attacks stop comboing once the hit counter gets high enough, in order to prevent infinite combos.
• Composite Character:
  •    Segalow is a weird fusion of Seth from Street Fighter IV, Rugal (uses his Capcom VS SNK sprites but with the moustache shaved off), and Lazlow (as one his voices is taken directly from Grand Theft Auto III, his lifebar portrait is Lazlow's Vice City artwork, and his flavor text on The_None's site is a direct transcript of some of Lazlow's dialogue from GTA III). He also has elements of Ray Park, who played both Rugal in the King of Fighters movie and Darth Maul; his big portrait is Movie!Rugal, and he has a Super Move involving a double-bladed lightsaber. He also has The Spy's Dead Ringer.   
  •    This is the result when a creator's character takes moves from multiple games. P.O.T.S.' characters are the most well-known for this; for example, Ryu is primarily based on his incarnation from Capcom vs. SNK 2: Mark of the Millennium and uses the sprite set from that game, but also possesses several of said game's groove abilities like dodging, meter-charging and custom combos without having to use a specific groove as well as the EX moves and parry from Street Fighter III and even the fake-out Hadoken from Street Fighter Alpha. He also has Evil Ryu as a selectable mode via certain palettes with all the moves said version has in addition to Ryu's own, and a "Master Ryu" mode which features both forms' moves in addition to a few new ones.   
• The Computer Is a Cheating Bastard:
  • One example is certain characters not requiring a minimum Super Bar level to do Super Moves when controlled by the AI, but requiring it when controlled by the player.
  •    Omega, Shadow Omega, YOUKAI's Naruto-Kun, YOUKAI's Sasuke-Kun and Super Mario 64 have been programmed by their respective creators to purposely never use any of their meter when they are being fought as CPU opponents. This allows them to infinitely use Super-based attacks without ever draining meter. This leniency only affects the CPU; the player doesn't get the same privilege when controlling these characters.   
• Cool Versus Awesome: Given the fact that the game allows you to include characters and stages from every fighting game imaginable, this is inevitable.    Want to have Team RWBY take on Shao Kahn and the forces of Outworld? Go for it!   
• Counter-Attack:
  • Several characters have one of these, and this mechanic can even be implemented via the Reversal or HitOverride codes. Notably, Reversal moves are capable of affecting characters without collision boxes, use HitOverride Hyper Armor, or use invulnerability via NotHitBy.
  •    Just like in its source games, Wobbuffet can only attack via this method, and Counter/Mirror Coat only work against physical attacks and projectiles respectively.   
  •    Gustavo can only attack via this method by making homing unblockable fart clouds each time he's hit, the strength of which depend on how hard he was damaged.   
  •    Zeeky H. Bomb's Random H-Bomb very briefly turns himself into a nuke. If the nuke is hit by anything other than throws, it falls over and explodes for an unavoidable, unblockable One-Hit Kill.   
• Crossover: M.U.G.E.N is often used for this, although gameplay styles do not necessarily mix well.    This is particularly true when characters from Guilty Gear, a game known for being much more notoriously fast-paced and complex than other fighting games (on top of having ludicrously cheap AI), are involved.   

• Cute Monster Girl:    The Teaf's characters, which also are Not Safe for Work.   
  •    There's also a series of Len edits based on various Kaiju- There's Godzillen, Biollente, Gamelen and Gyaoslen, as well as the decidedly less adorable Shin Godzillen.   
• Damn You, Muscle Memory!: The possibility of a M.U.G.E.N build having characters from different source games (complete with distinctive control schemes of such) tends to confuse some players when they are getting to know or use new characters.
• Death from Above:    The Metool's strongest hyper move has it drop the Metool Daddy on the opponent for an unblockable One-Hit Kill.   
• Death of a Thousand Cuts:
  • There are many characters whose attacks will hit the 999 combo meter.    These are mainly characters that would fall under SaltyBet's X-Tier orSpriteClub's 2nd or 1st Division.   
  • There are Shoot 'Em Up characters with insanely rapid-firing attacks that deal extremely weak damage   , such as the Vic Viper or Fire Leo III   . This trope often becomes their main method of combat.
  •    This is particularly funny in reverse when facing a weakly programmed AI, such as Alex Mercer, against a much stronger AI opponent such as Ika Musume, who will combo him to death for several minutes while he flails through the air helplessly.   
• Death or Glory Attack:
  •    Zeeky H. Bomb's Zeeky Words cost 3 power bars and has a vulnerability period when he's saying "Zeeky Boogy Doog" until the explosion. The attack will get cancelled and the power wasted should the opponent hit him during this. If he pulls it off however, the opponent is almost certainly a goner. That said, if successful, the attack also deals 500 damage to himself and any partners, meaning that if neither have enough HP, it can cause an accidental draw (or worse, a loss if the opponent somehow survives).   
  •    Just like in its source game, the Stupid Little Drill Tank will launch its unblockable drill out at 1/8th of its health, which deals a huge 400 damage instead of the usual 200 if it hits. This also removes its only method of attack for the rest of the round, making it a sitting duck to be finished off if the opponent avoids or survives it.   
  •    Dancing Banana's "Sugar Rush" move is a special attack that costs no power and is followed by a very damaging combo if it hits. However, the move is very easy to notice and guard against, and he leaves himself wide open to a counterattack if it's guarded.   
  •    The Creeper's explosion deals an insane amount of damage, more than likely to kill an opponent. If the opponent survives, however, then the Creeper loses.   
  •    Bokosuka Wars' only attack initiates a combat with the enemy with a randomized result. If he wins, the opponent instantly dies. If he loses, he instantly dies. The attack can also be affected by reversals, and since Bokosuka Wars only has 1 HP, any reversal will instantly kill him if it even does any amount of damage.   
  •    Brergrsart's Fleet of Falling Father Figures consists of Geese Howard falling from a great height, with the landing spot marked by a crosshair. If he lands on the enemy it will One-Hit Kill them, but he dies instantly if he misses and hits the ground.   
• Defeat Equals Explosion:
  •    Often seen on robotic characters, where defeating them will cause them to explode.   
  •    When defeated for a second time, the Dragon Tank will explode for a lot of damage to any nearby opponents. If this KOs the opponent, it counts as a win for the Dragon Tank.   
  •    Brergrsart's !Balrog does this too. And if you're in a team fight, said explosion can hurt you.   
• Decomposite Character:    Sunset Shimmer's pony and human forms are separate characters.   
• Deconstruction Game: M.U.G.E.N can be seen as a deconstruction of crossover fighting games (as well as games with guest characters), as you can see the far more realistic consequences of having characters in your roster with widely different gameplay rules. Gaze in awe as characters from older games with simpler mechanics    ^note Street Fighter, Kaiser Knuckle, The SNK games, and fighting games from the 1990s in general are mercilessly demolished by characters from modern, fast-paced, combo-oriented games ^note Marvel vs. Capcom, Guilty Gear, or games with more complex mechanics ^note Melty Blood, Arcana Heart, Under Night In-Birth   .
• Decon-Recon Switch: Thanks to the customizability of the engine, you can rewrite the files and states of your characters for proper balancing.
• Defeating the Undefeatable:    Over and over again:   
  •    Omega Tom Hanks was a character that was functionally invincible. He had no hitboxes OR hurtboxes on his main body, meaning that he was immune to damage AND basic reversals, while spamming helper projectiles for his moves. Yet, he was still beaten when the 2nd Death Star and A-Bomb had a code that could reverse his helpers in a way that would kill him.   
  •    A-Bomb itself. Similar to Omega Tom Hanks, it had no hitboxes or hurtboxes on its main body and spammed a fullscreen instant kill, but was also defeated when a modification of its own code was used against it.   
  •    Chuck Norris, a literally invincible Lethal Joke Character based on Chuck Norris Facts. He actually has been defeated before. Before that? He maimed several undefeatable characters with the same hitbox-less advantage, such as the above-mentioned Omega Tom Hanks, A-Bomb and the previous Oni-Miko.   
  •    Both Chuck Norris and Oni-Miko-Z (and countless other "unbeatable" characters) have fallen to the Debugger character, two floating strings of numbers that "delete" the opponent's root file, causing them to be read as nonexistent and dead. This only works in WinMUGEN, however.   
  •    At the highest point of power, some characters outright attack the computer.   
  •    Various creators have edited cheap or undefeated characters to be actually defeated. The most known case is Elque, and there's even one for Mathrus, who's originally one of said "attack the computer" characters.   
• Dem Bones:    Diablo Skeleton.   
• Demonic Possession:
  •    Several characters have symbiote edits: that is, them being possessed by the Symbiote, turning black and white and gaining a distorted voice. Said edits usually have jacked-up power and health stats, making them overpowered in comparison to their original versions.   
  •    One of the intros of Evil Homer shows Homer Simpson being possesed by the soul of the devil who transforms him into Evil Homer.   
• Depending on the Writer:
  • If about two or more makers share the characters they've converted, don't expect them to be both exactly the same.
  •    Few makers also are quite creative in their takes on certain characters. A good example would be The_None's Possessed Heita, who has a mode that comes with Captain Falcon's moves and voice. (Influenced heavily with the works of 3ha, which are almost 2 in 1.)   
• Did You Just Punch Out Cthulhu?:    It's more than possible to beat characters like Giygas or The Evil Spirit Incarnate. Not that it'll be easy, of course.   
• Digital Piracy Is Evil:    In the M.U.G.E.N community, there are two forms of this:   
  •    The first one, "warehousing", involves the practice of hosting a character on a website without the creator's permission. In some M.U.G.E.N circles, this is regarded as a disrespectful and dishonest practice, while others have no concerns about it.   
  •    The second one, much more subject to ridicule, involves "spriteswapping"—a process where a "creator" takes another creator's character and replaces all of the original character's sprites with "new" sprites. In particularly bad cases, the spriteswap will retain the base creation's gameplay elements even if it does not match the spriteswap's playing style. In even worse cases, the creator fails to change every single sprites, which causes the character to briefly "flicker" back to the original one during certain frames. Many spriteswaps also tend to have jacked-up stats, making them cheap and over-powered, like so. Warner's first creations are infamous for doing this, especially the cases of Evil Homer (a spriteswap of Reu's Evil Ken) and Burns vampire (Kong's Jedah). After the following backlash, he stopped spriteswapping.   
  •    This is subverted in the case of sprite-ripping characters from pre-existing games and using them in M.U.G.E.N. Capcom was asked about this in the early days of M.U.G.E.N's existence; the company stated that they consider it a form of fan art (so long as no one sells the characters, of course). Every other company seems to have followed Capcom's attitude, at least in spirit.   
• Did Not Get the Girl: Happens in Kung Fu Man's ending, as he can't save his girlfriend due to his kidnapper, Suave dude, not being created as a character yet.
• Disintegrator Ray:    Space Invader's only attack is a Slow Laser that not only KO's the opponent on a successful hit, but also removes them from the fight (if they lack Hyper Armor).   
• Distaff Counterpart:    There's a number of characters that are female versions of existing characters, particularly for The King of Fighters. Some examples include Zeroko, a female version of Zero, and Shikiko, a female version of Shiki.   
  •    While less common (No points for guessing why), there are a few Spear Counterparts as well, such as Gliz, who is a male version of Kula.   
• Distant Reaction Shot:
  •    Mega Mari's Finishing Move causes an explosion that can be seen from space.   
  •    Crazy Mukuro has a super move where he grabs his opponent, the screen goes white, and a skull-shaped explosion that can be seen from space occurs. It does less damage than you'd expect from an explosion of that magnitude, however. If he finishes his opponent with it, it's seemingly implied he died doing it, complete with a Sky Face.   
  •    20000 takes this up to eleven — if he finishes off the opponent with Nucleon Cannon or 20k Cannon, a reaction shot of an entire galaxy being destroyed by the cannon can be seen.   
• Ditto Fighter:
  •    There is a Ditto character available; it transforms into other Pokémon as its attacks.   
  • Characters that are designed to be Ditto fighters,    such as Unknown from Tekken,    often end up with an attack style that is mostly a mishmash of attacks from other characters. This is due to the difficulty of a programmer actually creating a character that duplicates the moveset of another character.
  •    Inverted with Dhalsims, whose "Yoga Evolution" Level 3 Super transforms the opponent into Dhalsim.   
  •    The MegaBrony's Queen Chrysalis turns into Mega Man, Proto Man, Tomahawk Man, Hard Man, Blade Man and Zero.   
  •    As Ditto, M.U.G.E.N versions of Yumeji Kurokochi can transform into other Samurai Shodown characters. Also, there is Cerenas' Siron.   
  •    Taken to the logical extreme with Okihaito's Metamon/Ditto, which copies its opponent word for word, code, graphics, sounds and all, even changing its own name and portrait into the opponent's to boot! This makes it only compatible with Winmugen, however.   
  •    There's an Imitater by AHZ which also copies the opponent in code, graphics, sounds, name, portrait and all like Okihaito's Ditto (while using a grayscale palette), except that it works in MUGEN 1.1.   
• Divergent Character Evolution: There's the occasional instance of a character starting out as a spriteswap of another character, only for other creators to take said character and heavily differentiate them from their original counterpart.    Notable examples include Warner's (and later Judgespear's) Homer Simpson (originally a spriteswap of Iori Yagami) and Warner's Wario (originally a spriteswap of Big Eli King).   
• The Dog Bites Back:    One of Dancing Banana's introductions has him kicking away Donkey Kong as he's not happy being DK's Trademark Favourite Food and all. Upon losing a match, Dancing Banana's death animation has Donkey Kong dropping in from above before proceeding to eat him.   
• Double Jump: Several characters including the default version of Kung Fu Man are able to use this. One can even set the number of air jumps that a character can do. Cue fighters hovering over the stage for a full minute and duking it out above the camera's view.
• Downer Ending: Kung Fu Man's arcade mode story ends with him failing to save his girlfriend from Suave Dude due to him not being created yet by Elecbyte. There would later be multiple versions of Suave Dude,    but sadly,    this isn't acknowledged.
• Dramatic Disappearing Display:
  • Some characters have coding that hides the entire GUI (lifebars, victories, powerbars).
  • Also possible to do so manually through the debug keys   - Hold Ctrl and press L, and the HUD will disappear   .
• Drop-In Nemesis:    If Dancing Banana loses the match, Donkey Kong will suddenly drop in from above and eat him. Granted, the banana's in no shape to fight back or even move after losing the match.=   
• Dummied Out:    SeanAltly's Sonic the Hedgehog has an unused super move that involves him summoning Tails in the Tornado to ram into opponents. Though it's unused, uncommenting a state controller in the .cmd file can allow it to replace the Blue Tornado super with nothing but a slight graphical bug.   
• Early-Installment Weirdness:
  • The very first version of Kung Fu Man, for the DOS version of MUGEN. His sprite looked different, he only had a basic punch, basic kick, crouching and aerial punch/kicks, one Special, one Hyper, and his throw move was nonexistent/bugged.
  • WinMUGEN could be considered this to MUGEN 1.0 and 1.1, as it had some code that is no longer available or deprecated in 1.0 and above, such as the "TagIn" function, statetime as a possible trigger (which is identical to the "time" trigger) and z-width, z-position and z-velocity variables (indicating that it was likely meant to have a 3D-axis).
• Easter Egg:
  • Some fighters have special entrances with other fighters, and sometimes special ending poses.    Deadpool, for example, has special entrances with Iron Man, Captain America, Batman, Cyclops, The Juggernaut, Ghost Rider, and The Mighty Thor.   
  • Thanks to the 1.0 update, winquotes also can be directed to certain fighters.
  •    AOAO's Jam has a secret move where she knocks the opposing character onto a bed and humps until their energy is drained, resulting in either a DKO or a victory.   
  •    If Homer Simpson is KO'ed by a Super Mario Bros. character, an 8-bit sprite of Homer doing the Mario death pose will come out of his body and fly off the screen.   
• Eaten Alive:
  •    The Killer Whale devours enemies. Prior to a nerfing, this was a One-Hit Kill, otherwise it chews on the opponent before spitting them out.   
  •    One of the Dopefish's attacks causes him to eat and instantly KO his opponent if successful.   
  •    Cheep-Chomp has an attack that eats and swallows the enemy, instantly KOing them.   
  •    There are vore characters and edits of existent characters with this, which is a NSFW fetish not allowed in various communities.   
• Edible Ammunition:
  •    Dancing Banana fires large bananas of varying sizes as projectiles.   
  •    Garfield throws Hotdogs as projectiles.   
  •    Homer Simpson throws Donuts as projectiles and one of his specials is Hell Candy Bomb, a candy bar that stuns the opponent for a short time.   
  •    Spongebob throws Krabby Patties as projectiles.   
  •    Nev throws ice cream as a projectile.   
  •    Hotel Mario uses Toast. One of his specials is firing a stream of jpeg Toast at the enemy. Hotel Luigi uses Salami and Spaghetti, and his special is firing jpeg Spaghetti. They can also fire Instruction Books, Toasters, Pennies, and use a jpeg gun, but the most you will see in a match are the food ones.   
  •    King Harkinian is a projectile spammer that throws "Dinner".   
  •    And not to mention the Fast Food Mascots as Ronald McDonald and Colonel Sanders.   
  •    That Guy can throw bowls of cereal and dishes of lobster.   
  •    SCP-999 can fire M&Ms at and cause Necco wafers to rain on the enemy. Unlike most of these examples, this attack actually heals the opponent.   
• Epic Fail:    Whenever Homer is involved, as of Vs Iori, who falls on his ass, to Goku, of which Homer poses as Goku, Super Saiyan and all...until he farts.   
  •    Any character who dies at the start of the battle.   
• Eldritch Abomination:    Giygas, natch.   
  •    Dark Donald as well. A Reality Warper monster with a demonic voice that can defeat the majority of characters while inhabiting the body of a fast food mascot? Doesn't exactly sound like a creature that won't destroy the mind of anyone who lays eyes on it.   
• The End of the World as We Know It:    This is what the Death Star uses as its strongest attack.   
• Energy Weapon:    Many fighters can shoot beams.   
• Exactly What It Says on the Tin:
  •    Don Drago's Zangief With Missiles edit is Minmei's KOF Zangief with missiles falling from the sky.   
  •    Big Glitchy Retarded Tiger Woods. The fact that it is an overpowered spriteswap of Claymizer's Chansey does not help one bit.   
• Excuse Plot: Many characters have readme files containing these.
• Extremity Extremist:    Several canon and original characters use only punches or kicks.   
• Fan Disservice:
  •    When Demitri uses his Midnight Bliss attack on certain characters, the results may not be pretty.   
  •    It is possible to have a character with hentai-based sprites hidden in its design that are only revealed in Fighter Factory (or sometimes by total accident when using them).   
• Fan Remake: It's entirely possible in this engine to remake whatever fighting game you desire. There are even standalone M.U.G.E.N games that are practically near-identical copies of popular fighting games (often with some new elements added to them).
• Fartillery:
  •    Peter Griffin uses farts as a flamethrower (known as the Anal Torch) and also uses farts like a hadouken.   
  •    The goblin character Menelikke does the same in his super. There's also the giantess Delilah who, in one of her alternate versions, has a full screen gas attack.   
  •    And there's also Gustavo, whose only attacks are... well, farts, when attacked.   
  •    Most_Mysterious played with this. Some of his characters have moves that have farts as a hitsounds (notable examples include Dink Smallwood's (who doesn't seem to even look like the character he's supposed to be.) Big Mother Ducker (also appearing as Skullman's striker) and Omega Tiger Woods's Shrimp Bus supers).   
  •    Iggy's throw has his Stand grabbing the opponent and Iggy jumping up to said victim and farting on his face.   
  •    Hige, a lethal joke character based on Clone Zero from King of Fighters, has the "Zero Fart" move—with actual farting noises. A variation of this is a Super Move.   
• Fighting Clown:    There are quite a number of characters that look and act silly, but otherwise play like a normal one. Examples include Dancing Banana, many of The_None's characters (especially Dee Bee Kaw), DDR/Telechy's cartoon characters, and Dialog Box^note A "rare" character that is essentially a Windows OS dialog box.   
• Finishing Move: A character's Super Move will sometimes be used as this. Characters from games that have explicit finishing moves   , such as Mortal Kombat, the Fist of the North Star fighting games, and Sengoku Basara   , will have them as well.
• Food-Based Superpowers:
  •    The adaptation of Ronald McDonald by Japanese creator Kishio (called as Donald instead Ronald in Japan) has various attacks that precisely involved McDonalds food as cheeseburgers as projectiles, hitting with giant french fries and even getting an apple from Happy Meal as an explosive. Not to mention he was modeled after Dio Brando, which included his own version of his Finishing Move, but with a giant hamburger falling from the sky instead of the steamroller.   
  •    Dancing Banana is capable of pulling out oversized bananas from hammerspace and throwing them at his enemies.   
• Foregone Victory: Certain cheap characters can exploit the system itself, causing them to win even before the match begins.
• The Fourth Wall Will Not Protect You:
  • Taken to its logical extreme with "dragon-tier cheapies", which are less like characters and more like computer viruses that are capable of completely destroying your computer.
  •    The_None's edit of Omega Tiger Woods has a victory quote where he tells the player he was right behind them a moment ago. Not his opponent, the player themselves.   
  •    If left alone too long, Varia31's Sweet Tooth will leave his position to appear directly in front of the camera and start pounding on the screen. It's a heck of a Jump Scare if the player leaves the game running in the background.   

• Fusion Dance:    While characters of fusions from both official media and fan works exist, Mugen has a few original characters that fit this trope. One notable example is "Brogal", who is a fusion of Rugal and Broly, and he's just as powerful as you'd expect him to be.   
• Gag Dub:    Some characters have voice patches for them that can be rather silly. Ever wanted an Utsuho with a Heavy Weapons Guy voice? Mugen has you covered.   
  •    Some characters come with a silly voice as their default voice. For example, there's Genikaze, a Goenitz who uses clips of the Super Smash Bros. Brawl announcer for... some reason.   
• Game-Breaking Bug: Certain matchups can lead to one character being unable to land a single point of damage on the opponent, both characters being unable to damage each other at all, or outright malfunctions in the engine, due to the different codes used with each character and/or sloppy coding. Some characters are intended to be used in standalone games rather than the regular engine and are outright not compatible, which can lead to infinite exploits by simply spamming projectiles or even regular punches.
  •    Played With (for laughs, of course) in Vans' Rage Rock that has a super that crashes MUGEN. The_None's update makes this up to eleven.   
• Game Mod: There are various mods and tools that can alter the M.U.G.E.N engine.    Two such examples:   
  •    The Uno Tag and Add004 systems allows characters to tag out with their partners.   
  •    There exists a Smash Bros. system for M.U.G.E.N. Now you can duke it out with your favorite fighters, Smash Bros. style!   
• Gender Bender:    There's the infamous Midnight Bliss... Some characters have custom animations if they get hit by it, with varying results.   
• Getting Smilies Painted on Your Soul:    SCP-999's combat method involves doing this to even the most vicious opponents, as being in contact with SCP-999 makes an opponent increasingly happier until they do a Happy Dance (which takes that opponent out of the fight).   
• Glass Cannon:
  •    The Space Invader from Space Invaders. It has only one attack, a laser that instantly vaporizes the enemy if unblocked. It will also go down in one hit just like in its source game.   
  •    The Creeper, who can kill the opponent by exploding, will lose if either it misses or the character is tough enough to survive.   
• Godwin's Law:
  •    The "X-Form" of The_None's Skullman has a counter move in which he hits the opponent while being shaped like a swastika.   
  •    And yes, an Omega Adolf Hitler character exists. As well as an anime one, with sounds from Downfall   
• Gone Horribly Right:    M.U.G.E.N is a meta example for the fighting game genre. Do you want an engine where every fictional character you ever knew and loved could fight each other? Now you have it. Unfortunately, this also results in many of those characters being cheap, poorly made, unfinished, not at all true to their original game, or any combination thereof. You also get horribly imbalanced fights between characters with different gameplay styles and engine rules.   
• Gorn:    Several characters in the M.U.G.E.N roster, such as those from Mortal Kombat, have lots of gory ways to finish off opponents.   
• Green Hill Zone:    Several people have even created the Trope Namer.   
• Green Thumb:    Hashi mainly uses plants when attacking.   

• Healing Shiv:    SCP-999's candy-based "attacks" will heal the opponent, but increases their happiness bar^note "KO's" opponent if it fully fills up a lot more if the opponent had missing HP.   
• High-Pressure Blood:    With Mortal Kombat and Samurai Shodown characters converted to the engine, this was bound to happen.   
• Historical Domain Crossover: Happens when you have crossovers between characters from fighting games and Real Life that take place during different time eras.
• Hitbox Dissonance: In some cases, the size of a character (or even the posture of their stance) may cause punches, projectiles, or other attacks to go right over their head, sometimes just barely. This can lead to those attacks being avoided by simply standing still. Then there are moments where it looks like a character should be able to avoid an attack by crouching, but the attack still hits them anyway. Oh, and if a character is running, depending on their size and the posture they take, the same situations can occur, meaning a projectile can hit or miss when it looks like it shouldn't.
• Hit Points:
  • All characters have a HP bar which depletes when they're damaged. Certain characters however use this to show how many "lives" they have, such as the Shoot 'Em Up ships (getting hit takes off one of their three "lives" by removing a third of their life bar) or army/swarm based characters (where each individual character getting killed removes part of the lifebar).
  •    SCP-999 has its own bizarre variation on this. It gives opponents their own Happiness meters which function as separate health bars, and 999's "attacks" deal no damage (or even heal the enemy) but increase their target's happiness meter. Filling up an opponent's happiness forces them to Happy Dance for the round, which counts as a KO. SCP-999 takes no conventional damage but has their own Happiness meter which goes down instead of HP whenever they're damaged, and they're instantly defeated once it's fully depleted.   
• Hoax Hogan:    In an interesting case, there's a recreation of Hulk Hogan where the creator used Muscle Power (a known Hogan expy) as a base.   
• Hold the Line: There's a few characters that task you with surviving for a certain amount of time instead of actually fighting them   , such as the Goliath Doll or the Alien Swarm   . Some of these use their own timer rather than the standard match timer, presumably to prevent the characters becoming impossible to defeat in situations where the timer is disabled.
• Home Stage: Being the FG generator this engine is, M.U.G.E.N can configure a specific stage with a character of your choice, being attached to one stage in Arcade Mode instead of having a random stage as default. Some characters also include stages alongside them.
• Hurricane Kick:    It's quite common to see both canon and original characters with a spinning kick attack.   

• Immune to Flinching:
  • Super Armor, and its permanent Hyper Armor variant, prevents a character from flinching when hit. This can be coded onto a character via the HitOverride function. Note that this usually works for direct attacks and projectiles, reversals that put the character into a flinch state should their attacks make contact still work.
  •    Frost Man takes this trope up to eleven. He has Hyper Armor, and because he can't be flinched, he can tank hits and deliver numerous attacks that are hard to interrupt (though there are certain fighters that can stop him). He also cannot be grabbed or stunned. Frost Man can actually beat a few cheap AI characters and fighters who rely on spamming projectiles, multi-hit moves, or moves that utilize custom states (as those don't work on Hyper Armor). He does slow down a bit if he is hit multiple times, though, and is also vulnerable to reversals.   
  •    The Stupid Little Drill Tank, aka Egg-Mobile D takes it even further than Frost Man. Not only does it not get flinched or slowed down whatsoever when hit, it is also immune to custom states such as grabs, and reversals have no effect on it since the drill is a helper and not part of the main body. As such, most AIs that tend to projectile spam, attempt grabs often, or use combos find themselves on the business end of the drill, which is unblockable and kills most characters in 5 hits.   
• Improbable Weapon User:
  •    Deadpool has a sheep with a cannon to its back in his special.   
  •    Garfield uses hot dogs as projectiles.   
  •    Pingu and Finn use snowballs as projectiles.   
  •    White Len has been known to attack with kittens.   
  •    Dancing Banana uses oversized bananas as projectiles.   
  •    POCKET SAND   
  •    SpongeBob uses bubbles and Krabby Patties as projectiles.   
  •    Princess Bubblegum uses beakers as projectiles that explode on impact when it hits the ground.   
  •    Sonic uses rings as projectiles.   
  •    Homer uses doughnuts as projectiles, along with the Hell Candy Bomb.   
  •    Peter uses beer bottles and his lit farts as projectiles.   
  •    Adam Amundson can use a Game Boy, a spiked ball (named Mr. Spickles), and a Neural Stunner as projectiles.   
  •    Daniel can use a Galaxian, Cirno, and the Barrel as projectiles.   
  •    Bob and Cartoon Guy can use rocket fists as projectiles.   
  •    Chaos beat Peter to the punch and uses a slow-moving, noxious cloud of fart.   
  •    Bridget uses modified yoyos.   
  •    Taz uses burps.   
  •    Chowder spits out fruit as projectiles.   
  •    Omega Tom Hanks attacks with posters of his movies and an exploding dog.   
  •    Hastur, an Orochi/Mizuchi edit which is a lethal joke character, fires projectiles of Mizuchi with certain attacks.   
  •    Hige can throw Igniz, Krizalid and Original Zero at his opponent.   
  •    Nev can throw ice cream cones.   
  •    Cyberbots R.A.D. attacks using his cannons, both with missiles, and simply punching the opponent with them. Given it's a giant Tank, this is pretty absurd and funny.   
  •    Calvin uses water balloons, a squirt gun, and his wagon.   
  •    Hugo Simpson releases his homemade Pigeon-Rat.   
  •    SCP-999 squeezes a packet of M&Ms to fire its chocolates at the enemy. This actually heals the opponent.   
  •    A number of characters by Brergrsart have some:   
    •    That Guy can throw bowls of cereal, lobster dishes, banana peels, a pair of scissors, and Shuma-Gorath as projectiles, become the "KomodoHype" emote from Twitch and continuously scream, summon Red to throw a rock, and literally explode.   
    •    Shotoclown can throw bubble-spewing Dewgongs, a raccoon, and cheese, ram into his opponent on a scooter, and simply fire a pistol, in a game where most fighters usually use melee techniques.^note  Said pistol super is also one of the most damaging moves in all of Mugen, discounting One-Hit Kill moves.   
    •    Gweelay takes a page from Ronald and can throw hamburgers as projectiles.   
    •    !Balrog can throw rolls of money, sacks of cash, pots of gold ,and Pots of Greed.   
    •    Stretchy Limbs can launch miniature versions of himself.   
    •    Mister Fahrenheit can throw basketballs and drop a satellite on opponents.   
    •    How Are You? can kick dogs at his opponent, as well as "TAKE THEM FOR A RIDE", which leads to being attacked by multiple Street Fighters in quick succession.   
    •    True Monando Boy can use Doritos and the actual Monando symbols as projectiles.   
    •    SpinTo can launch wolves, become a Sharknado,h ave Hank Hill call the opponent a LOSER, and summon a giant Katamari of Twitch emotes flatten his opponent.   
    •    Uncle Joel can summon Kermit^note  Who is generally used to represent Joel's dad by viewers/fans to shoot his opponents with a single bullet, reel in a "SUPER BIG!!" fish, throw the infamous pizza, and a standard Shun Goku Satsu... Which nukes Norway if it connects.   
• Improvised Weapon:
  •    Rorschach. Hairspray. Cooking Fat. Grappling Gun. Toilet. Numerous Others. Hurm. Deconstruction. Lethal and Gruesome Results.   
  •    Colonel Sanders wields chicken and uses one of his statues to block.   
  •    All Octavia Melody needs is a cello.   
• Indy Escape:
  •    The Trope Namer boulder sequence has been created as a "boss" stage.   
  •    The Murder Wall from Kid Chameleon must be outrun as well.   
• Inevitable Tournament:    Some M.U.G.E.N forums hold tournaments for fun. While most follow a standard format (usually 1 vs 1 or 4 vs 4), some have fun twists on the genre.   
  •    SaltyBet used to runs tournament on a weekly basis; it has since started running tournaments after every hundred Matchmaking matches. These tournaments are typically intra-tier tournaments involving B-, A-, and S-Tier fighters; viewers can bet on each match, and the viewer who has the highest total at tournament's end gets some extra Salty Bucks added to their take. A custom tourney can even be held once Salty determines whether any possible matchups will result in a crash or otherwise permanently-delayed tournament.   
    •    SpriteClub also holds them, with tourneys happening every 50 matches. Unlike SaltyBet, they can come in 2v2^note  Both simultaneous or Turns , 1v2, 3v3, or 4v4, as well as in brackets of 8 ,16, 32 or 64, with or without double elimination. Tournaments can go by the Division system, Rating system, or be free^note  Any character, any palette.   
• "Instant Death" Radius:
  •    Oni-Miko-Zero. Literally. Put her up against most regular characters and that character is dead even before the battle starts.   
  •    The "Debugger" character uses a code that somehow deletes the opponent's root state, causing them to be read as nonexistent and thus KO'ed before the round starts. So far, it can beat Oni-Miko Zero and Chuck Norris with no effort. However, its ability only works in WinMUGEN, and it becomes nothing but a fancy string of numbers in MUGEN 1.0 and above.   
  •    The latest versions of uber-cheap characters (known as "Postman" or "Secretary" characters) run an .exe that affects the game such that only characters with their name are allowed to win.   
• Interface Screw:
  • Multiple characters are able to disable certain buttons on their enemy's moveset.
  •    Gramperson's W.D. Gaster is unique in that his stats can carry over through multiple matches on Arcade Mode. Fitting for somebody who has supposedly transcended reality. Heck, he can attack before the match even starts!   
• Intra-Franchise Crossover: Commonly seen here, in which you can make the roster as you like, so you can put the same character from different games in the same created fighting game you like. A   s example, you can put Ryu from Street Fighter II, Street Fighter Alpha, Marvel vs. Capcom series, SNK vs. Capcom: SVC Chaos, Capcom vs. SNK series and even Street Fighter in the same roster and make them fight against each other.   
• Invulnerable Attack:    Known as "Infinite Priority" here. A favorite of SNK Bosses, cheap characters, as well as "retarded" characters.   
• Ironic Name:    Rare Akuma by P.O.T.S. is among the most well-known Akuma edits due to how Purposely Overpowered it is and is extremely easy to find and download as a result.   
• Jack of All Stats:    Amongst the examples we could list sits    Kung Fu Man, the default character that comes with any downloaded copy of M.U.G.E.N (mostly as a coding example and a base for creating characters) and eventually became the mascot of the engine.
• Joke Character:    There are a good number of characters that are weak on purpose:   
  •    Beatdown characters like Sandbag do practically nothing but stand in one place and take damage from everything until they die.   
  •    Magikarp does nothing but Splash around (which does nothing, as per usual), and dies in one hit. Should it somehow manage to survive for 40 seconds, it'll use Struggle which will One-Hit Kill the opponent if it hits... and also itself, regardless of whether it hit or got avoided. This means that it's literally impossible for Magikarp to win unless the opponent kills themselves without hitting them.   
  •    Flappy Bird. He's a One-Hit-Point Wonder who dies if he touches the ground or gets hit, and his only method of damaging the opponent is to keep flying to get enough super meter to use his Limit Break. This causes the pipes from his game to appear like a scrolling level. While this is highly damaging, Flappy Bird also dies if he touches those, making him an extremely hard character to play as.   
  •    There are characters that KO themselves in their intro, even before the fight starts.   
  •    And then we have characters who are actual jokes, such as "Pots Styled Eltnum". At first, you might think this is an edit of Eltnum by creator Phantom Of The Server (aka P.O.T.S.). Then you realize it is Exactly What It Says on the Tin: a swarm of pots with Eltnum's face in the front of each.   
• The Juggernaut:
  •    While a great many characters fit this mold, The Duane exaggerates this. He can one-shot nearly any other M.U.G.E.N character and has an obscenely huge hurtbox inversely proportional to his hitbox. Even if you manage to hit him, good luck trying to do it again.   
  •    The Stupid Little Drill Tank (aka the Egg Mobile-D) is not only Immune to Flinching, it also doesn't pause when hit (unlike most Hyper Armor characters), it can't be reversaled since the drill is a separate helper, and it keeps moving in one direction until it exits the screen just like in its source game. Anyone touching the drill takes an hefty unblockable 200 damage. As such, the Stupid Little Drill Tank is notable for being ridiculously effective against AIs that attempt to stand in front of it to perform combos.   
• Jump Scare:
  •    The_None's Giygas uses this extensively.   
  •    Certain edits of Ronald McDonald have actual screamers coded into them to throw the player off in the second round.   
  •    One of Trouble Man's winposes.   
• Kamehame Hadoken:    What's a fighting game without it?   
• Kiai:    Being a fighting game engine, there are plenty of examples. The most particularly notable one is the JoJo's Bizarre Adventure "WRYYYYYYYYYYYYYYYY!" (used when anybody uses the Steamroller or when Chuck Norris drops the sun on his enemy).   
• Kung-Fu Jesus:    Yes, he is a M.U.G.E.N character. So are God and Satan (courtesy of Adult Swim's Bible Fight).   
• Lazy Artist:    This is rather common, especially when new Shotoclones are involved. This is sometimes justified when creators use characters as bases for their distinctive creations (e.g., the majority of the MvC-styled Mega Man characters, which use Mega Man as a base).   
• Lethal Joke Character:
  •    Rare Akuma, Chuck Norris, The Dopefish, Zeeky H. Bomb, Slot Machine, The_None's Sue Sakamoto (aided by Logan Keller providing blind fire), Neco-Arc...   
  •    Wobbuffet. Like its original source, its only form of damaging the enemy is via Counter-Attack. However, the power of its counter against physical attacks increases if it takes a hit when swinging, making it able to kill otherwise-broken characters in one hit. And it gets leftovers and Shadow Tag as moves. Finally, it also gets Destiny Bond, which destroys the opponent instead should Wobbuffet get K.O.'d when the move is active.   
  •    There is also Rolento's Yoshi, whose movelist consists solely of the Hokuto Hyakuretsu Ken   .
  •    The Killer Whale.   
  •    One of The_None's April Fools' Day releases, Noah, whose basic attacks—when low on health—would stamp you into the scene of Enter the Dragon to get promptly roundhouse kicked by Bruce Lee   . No wonder The Nerd was right...
  •    Gay Bahamut/Primeus, The God Of Retarded Characters by RicePigeon, most of whose attacks involve notoriously "retarded" characters.   
  •    Giygas/Ozma, created by fhqwhgads7 and supposedly inspired by Primeus, is an April-Fools'-joke-character-turned-boss. It is basically a gigantic floating jawbreaker that starts off with Giygas' attacks, then imitates various YouTube Poop characters as it loses health and layers.   
  •    Vans' Rock Howard, who has the voice of Urien and whose MAX2 super move destroys the universe, crashing your program in the process.   
  •    Omega Tiger Woods, who can and will soundly pummel almost any character he comes across as long as that character isn't another Omega Tiger Woods. Where does he get that Shrimp Bus from, anyway? He's intended to be an SNK Boss-type character... just bizarre.   
  •    Similarly, Omega Tom Hanks, who turns the fight into a game of Bullet Hell by sending DVD covers of his hit movies after you.   
  •    Someone made a version of Mario called "NES Mario". He can only attack by jumping on enemies and he dies in two hits (if you don't press the button to turn into Super Mario again at the expense of some of the lifebar). But one specific programming trick makes him lethal. Fighting game characters flinch when hit, and NES Mario does not. If you get a window of opportunity, you can just keep on stomping your foe and finish them off in less than a minute.   
  •    Someone remade the first level of Super Mario Bros. Your hilariously oversized character will still be one-shotted by Goomba and pits, especially if they have limited jump physics. That stage's creator also remade the first levels of Super Mario Land and Contra. While the Super Mario Land stage is easier, prepare for your character to die in one hit in the Contra stage.   
  •    Someone made a classic version of Pac-Man. All he can do is move across the stage and munch on whatever gets in his way—but that is all he needs to do. God help his opponent if Pac-Man eats a power pellet...   
  •    One of the characters used as a "cheapie-buster" in earlier times was the Metool, the Mascot Mook from Mega Man. It had half the attack and defense of a regular character (and died twice as fast), but it was short (making it hard to hit), it could spam a Spread Shot from afar, and it could use its signature helmet guard. Oh, and it could call forth a giant Metool that instantly squishes the oppponent.   
  •    Saggot, aka "Bootleg Sagat", is an edited Sagat that plays like he came from one of the infamous Street Fighter II bootlegs. This means a whole new level of Tiger Shot spam, ridiculous combo ability, and crashes galore. His theme from the first Street Fighter perpetually plays during his fights, overriding any other music, and his victory pose references the famous "Cornflakes" line from the Street Fighter cartoon.   
  •    Other Street Fighter bootleg characters that end up being dangerous include Koryu (heavy projectile spamming much like the infamous Koryu edition), BroKen (similar to Koryu), and Viga (whose moves can do serious damage).   
  •    Flame Hyenard: He doesn't have any hitboxes, let alone a sprite (unless you're playing Endercreeper's character edit), and his only attack is a full-screen infinite with Flame Hyenard in the background. You WILL BURN! BURN! BURN TO THE GROUND! if you try to fight him. Ditto for Cali Bear, Flame Hyenard's spriteswap.   
  •    Zeori, NMOri, and Trouble Man, three entries in TrinityMUGEN's "Iori Fest", where MUGEN creators were challenged to take Vans' Iori, and make the most insane edits to it possible.   
    •    NMori is intentionally wracked with Idiot Programming, including his hurtbox only covering the center of the sprite, changing position just from his stance, a Call of Duty-style regenerating health mechanic, and many of his moves having unusual properties. In addition, when he jumps, if a hitbox hits any part of his sprite, the game crashes. He's so unstable in fact, that when he showed up on SaltyBet, he managed to crash the entire stream.   
    •    Trouble Man (named after the ending theme of the Darkstalkers series) has a special move that spawns Doom-engine projectiles, and supers that range from grabbing the opponent and then being hit by them after they end up appearing at the other side, to turning into the Oracle from Strife and exploding, to summoning a Spider Mastermind, to turning the opponent into a sandwich, eating it, and then burping it out, which then explodes it. A second version of Trouble Man includes a special move where Trouble Man turns into Iori's King of Fighters XIII sprites and smashes the opponent with a lamp, a taunt super that spins around a random Darkstalkers character and throws them, and another super that has Trouble Man shoot homing bullets out of his fingers.   
  •    The Space Invader. The "Lethal" part comes from the fact that his laser is a One-Hit Kill, and the "Joke" part comes from the fact that it dies in one hit.   
  •    Iea. He flies off screen and dies if he gets hit, including his own assists. However, he has a lethal sword attack and can summon falling blocks that can one-shot opponents.   
  •    Winnie the Pooh. Specifically, the one from Winnie the Pooh's Home Run Derby. His baseball bat normally does pathetic damage, but if you time the attack as soon as he glows, it offs 1/3 of the opponent's maximum health or so. And it can't be blocked.   
  •    "Ms. Fanservice", who seems like a heavy edit of Yoko who uses other {{Ms. Fanservice}}s for her moves, and an entirely different moveset. It sounds like a run-of-the-mill gag character, and is overall tamer than most characters on this list, but she has extremely aggressive AI, able to take down many other characters who aren't outright cheap. Including the original Yoko she was based on, who isn't a cakewalk herself.   
  •    NES Megaman plays like the NES classic games, obviously. More closely to Mega Man 2. Like the classic games, his Mega Buster does pitiful damage, his weapons have limited ammo and he lacks a slide, giving him poor mobility. Oddly enough, he doesn't have his Mercy Invincibility, taking more damage in the process. Oh, and despite having a power bar, he lacks any specials or hypers along with fragile defense. However, he makes up for this with his sheer small size, making it hard for opponents to hit him. The Metal Blades can shoot in 8 directions, making it useful as an anti-air move and has the most ammo. The Time Stopper while as useless as in the original game (made even more worthless as Mega Man cannot recharge his weapons here, making this a one-time use until next round) can be used to interrupt attacks or flee from combos, allowing Mega Man to free himself. But his deadliest weapon is the Air Shooter. Thought it was useless? Think again! Remember that trick against Crash Man where if you position the tornadoes right, Crash Man takes enormous damage? Here, it's even easier as most fighters are big enough for Mega Man to hit. If the opponent is not careful, Mega Man can unleash a flurry of tornadoes and can drain the foe's health within seconds.   
  •    The Wasp Hive by an unknown author^note  The author field says Elecbyte, though this is just a sign that nothing was put in it. It it totally immobile and doesn't do anything, but attacking it summons a swarm of deadly wasps that Zerg Rush the attacker and constantly sting them, which doesn't do much damage, but each hit causes stunlock, potentially overwhelming them in a Death of a Thousand Cuts combo that is very difficult to break out of.   
  •    Brergrsart's Fleet of Falling Father Figures. If it misses its only attack, the Fleet is instantly killed. But if the attack lands, it's a One-Hit Kill, and it's quite hard to dodge as well.   
  •    Kokodesuka/The Goenitz Experience 2015 is an edit of Goenitz that only uses the Yonokaze. And said Yonokaze is extremely fast as well, and homes in on your location.   
  •    Hige is an edit of Clone Zero that was one of the first intentionally overpowered joke characters alongside Rare Akuma and Hastur. Hige has plenty of super moves, many of which can One-Hit Kill the opponent, including, but not limited to, a Shun Goku Satsu move that also briefly Midnight Blisses them (and can kill through Golden Hatsune Miku's extra life), a variant on his "Zero Fart" move with actual fart noises, a Proton Cannon, a Blodia Punch, summoning an UFO that spawns flying Clone Zero heads and nuclear missiles, and the Third Impact. He also throws Krizalid, Original Zero, and Igniz as projectiles for one of his special moves.   
  •    SCP-999 is a cute orange blob that cannot deal damage or block attacks... but mere contact with it will cause the enemy's happiness bar to rise, several of its "attacks" cause the bar to rise quicker, and it can counterattack physical attacks with a hug move. If an opponent's happiness bar fills up, they're forced to Happy Dance to "Happy Happy Joy Joy", essentially KOing them from the battle. SCP-999 also has their own "happiness meter" in place of Hit Points which is lower than a usual health bar, but it also caps the maximum "damage" taken in a single hit to 50, making strong, overpowered-damage attacks far weaker against it.   
• Lethal Lava Land:    Diablo's stage, among others.   

• Literal Ass-Kicking:    Dancing Banana has a throw that's actually called "Ass Kick", where they grab the opponent by the neck from behind and kick them in the rear, causing the opponent to scream their death cry. It can appear to be a Groin Attack depending on the target, however.   
• Luck-Based Mission:
  •    Whether Bokosuka Wars wins or loses is purely luck, just like in the original NES game. It is also the only way he can give or receive damage. Most fights with Bokosuka Wars will be a draw if he cannot reach the enemy's hitbox (assuming the opponent even has one) or if the opponent is immune to grapples. A Mirror Match is also a guaranteed draw. However, an enemy that uses reversals can hurt him and/or put him into a custom state the "normal" way — and since Bokosuka Wars only has 1 HP, any damage from the reversal will kill him.   
  •    One of the hypers of Makao and Joma randomly selects a card with a random hyper attack that gives massive damage, however, the opponent has two chances at being saved if the randomizer selects either Hiroshi's business card, which nullifies the hyper, or the six of hearts, which automatically kills Makao and Joma.   
  •    Daniel has a slot machine ability that can get a randomized result. Some of them are good (like a regen, damage boost, or temporary invincibility), but some are also very detrimental (such as reducing power bar to 0, getting stunned for a few seconds, or getting exploded)   
• Luckily, My Shield Will Protect Me:    The Metool's signature helmet guard makes it invulnerable against anything short of code manipulation, and is one of the reasons why it's a Lethal Joke Character.   
• Man-Eating Plant:
  •    Hashi technically is one.   
  •    Samurai Shodown Konoha uses one in her Zetusmei Ougi.   
• Meaningful Name:    Rage Rock, a Rock Howard edit by The_None is called as such because he can Rage Quit with his hidden Desperation Attack, crashing the game.   
• Mechanically Unusual Fighter:
  • There are lots of these floating around.   An original character example is Omega Tiger Woods—he cannot block at all, but he has a crosshair that drops missiles (and a claw arm) on the enemy.   
  • Most Shoot 'Em Up characters in M.U.G.E.N become this, as they play almost exactly like in their source game.    Examples include R-9, Fire Leo III, and Vic Viper.   
  • Otherwise normal characters can become this if they are configured to play like this under certain palettes.    ShinRyoga and Neo Ankh's Mario has a "ghost mode," where he is completely invincible and has a quickly charging power meter, but his health depletes fast as well.   
    •    SaltyBet and SpriteClub regulars know that most of these sorts of edits are usually placed on a character's 12th color palette (or "12p"). To ensure fairness during Matchmaking and Tournament modes, characters are limited to their first four palettes. When players request matches for the Exhibitions, any palette can be chosen.   
  •    Mirror Cube Square is a floating cube that fights solely with projectiles and is healed by attacks, but loses its health rapidly if left alone. The best way to beat it is to therefore not attack it.   
  •    Supermystery's Sonic the Hedgehog characters play like the Classic Sonic games. Pressing A, B, and C will jump (or spindash if you're crouching), X spawns itemboxes, Rings spawn at random, and, much like Sonic 2, collecting 50 rings will make you super.   
  •    SCP-999 doesn't deal damage, but making contact with it will cause the opponent's happiness bar to rise. It "attacks" by hugging the enemy or firing candy at them, which makes happiness rise much faster. If an opponent's happiness bar fills up fully, they're forced into a Happy Dance for the rest of the fight, which is considered a KO. Furthermore, SCP-999 has its own HP bar in the form of happiness, which depletes differently from other characters' and slowly restores if the opponent is touching it or faster if it is hugging them.   
  •    Certain "fighters" aren't characters but rather entire levels in themselves, such as "M-NES Game 1", "M-NES Game 2", "Gameboy Game 1", and so forth.   
• Mega Manning:
  •    MegaMari.   
  •    There are many versions of Mega Man out there, sometimes equipped with weapons from his platformers. Not to mention the MvC version of The Blue Bomber.   
  •    The MegaBrony put said weapons in the My Little Pony: Friendship Is Magic cast.   
• Mighty Glacier:    Plenty. Juggernaut, Hauser, the Alien Queen...   
• Moe Anthropomorphism:    The OS-tans are in M.U.G.E.N already, as well as some of the Nijiura maids.   
• Mood Dissonance:    A wacky, cartoonish character fighting in a Darker and Edgier setting can give off this effect, such as Stimpy on an Alien vs. Predator stage with bloody corpses in the background. The reverse obviously applies too, like a Predator on the Warner Bros. studio lot from Animaniacs. And of course, two characters of different mood styles fighting each other (Homer Simpson vs. Freddy Krueger).   
• Mood Whiplash:    SCP-999 is normally a heartwarming and adorable character to play as or against, with none of its "attacks" capable of dealing damage and instead makes the opponent happier until they Happy Dance. However, if the opponent's happiness bars is filled but can't be placed into the happy dance KO state then after a short while SCP-682, complete with exposed flesh and bone, will suddenly drop in without warning and crush the enemy for a One-Hit Kill.   
• Monster Clown:   Dark Donald, an overpowered edit of Ronald McDonald, is even stronger than Rare Akuma.   
• Moveset Clone: Many sprite swaps or sprite edits of another character tend to be these, especially if the movesets aren't changed at all.
• Ms. Fanservice:    There is a character literally named "Ms. Fanservice". Created by DrKelexo, she is an edit of Warusaki3 and Kabao's Yoko Littner that includes cameos of several fanservice-friendly fighting game girls (e.g., Felicia, Dizzy, Chun-Li, Elena, Yuri Sakazaki and King).   
• Musical Assassin:
  •    Yoma Komatsu.   
  •    Hatsune Miku uses her voice as her weapon.   
  •    SpongeBob SquarePants. "I'M A GOOFY GOOBER! ROCK!"   
• My Kung-Fu Is Stronger Than Yours:    This is the basic premise of the EXTREMELY cheap characters (e.g., Chuck Norris) "taking part" in the Nuclear War, constantly being updated to beat each other. If any one of them is defeated, expect their update to have immunity to the move that killed it. This mindset reached the point where they became capable of winning matches against regular characters before a match even started.   
• Mythology Gag:    Dcat's Krang has attacks, quotes, and even color palettes from various shows, comics and video games in the TMNT franchise (and in one instance, his crossbow move is taken from a kids' colouring book).   
• Nerf:    Certain creators have modified overpowered/cheap characters into far more balanced versions of themselves, done by often removing or toning down the elements that made them overpowered. An example would be Yuki's Elque, modified to be far less overpowered by Ironcommando and Zigg4d.   
• Nigh-Invulnerability: Alot of the characters have either zero hitboxes or seemingly infinite health.
• Nintendo Hard:
  • A lot of AI patches go here.    For a specific example, look at the work of Misobin_ISM: He turns mild-mannered (but still challenging) characters into absolute monsters. His patch for Vergil basically pits you against an encyclopedia of his combos. Dio lays you out with some crazy tandems and abuses his teleport while defending. Geese will counter all of your moves and force feed you a Deadly Rave. His Shin Akuma is as insane as you would expect. There is also Hutano, who basically unlocks the true power within 9's Melty Blood characters and shows you some of the most nightmarishly evil combos ever seen.   
  •    Muteki's Guilty Gear characters are built with an aggressive AI that fully exploits the computer's natural advantage against human players. It blocks most attacks without a second thought and links together very long strings of attacks and supers to make sure that the human player can't fight back for more than a second; combined with the extremely fast gameplay of the franchise, this tends to turn anything not incredibly fast-paced into chowder.   
  •    Any of the Cyberbots characters (save for Z-Akuma) have unbelievable AI.   
  •    Ironcommando made an AI patch that turns Metool (who lacks a proper AI) into an absolute nightmare reminiscent of its "Cheapie Buster" days, causing it to guard almost perfectly, lock the opponent into a Cycle of Hurting with a Spread Shot Spam Attack, and drop the One-Hit Kill Metool Daddy as soon as it gets 3 bars of power.   
  •    For a non-fighting example, pitting fhqwhgads7's The Kid and Yukari Yakumo together will start the match with The Kid in a scrolling obstacle course. Keep in mind that like in the game, The Kid dies with one attack, and you can't fight Yukari unless you get through the course. Even then, the match simply becomes a boss fight against Yukari... and Primeus.   
  •    For a long, long time, Sander 71113's Wolverine was known as an absolute monster and the bog standard for players looking for a challenge.   
• No Ending:    Most characters do not have ending storyboards for completing arcade mode. Or intros, for that matter.   
• No Fourth Wall:
  •    In one of her winquotes, RicePigeon's Yukari Yakumo recognizes M.U.G.E.N as a computer program, and how amazing it is to merge diverse worlds together, then concludes that humans must really have been inspired by her.   
  • In general, it's possible to edit winquotes, so any character can play this straight.    There is a version of Rocko who comments that M.U.G.E.N Day can be a very dangerous day.   
  •    Unlimited Team's Deadpool has an hyper move where he grabs the lifebars and powerbars^note which can be customized based on which ones are installed and hits his opponent with them.   
  •    Pingurules' Robbie Rotten has one quote commenting that, since you're reading a victory screen, you must be playing version 1.0 or higher.   
• No-Holds-Barred Beatdown: Several melee super arts.    One of Segalow's even uses the trope name.   
• Nonstandard Character Design:
  • If your roster contains characters from games with wildly different art styles, this is bound to happen.
  •    DDR's Saturday Mornin Mayhem fan game has most of its cast utilizing sprites drawn by DDR himself, which possess a distinctively cartoony black line artstyle. The sole exception is Peter Griffin, who was sprited by a different creator (Warner) and thus lacks the black lines everyone else has.   
  •    SCP-999 doesn't have an actual "main body" sprite, and is constructed from several semi-translucent orange circle sprites (plus two eyes, and a mouth) positioned and scaled in a way that makes it appear and move like a fluid, amorphous Blob Monster with a smiley face.   
• Normal Fish in a Tiny Pond: Many platformer characters (both players and bosses) with their original mechanics intact. They tend to have Mercy Invincibility, nullifying combos, and have unblockable attacks that conventional fighters cannot dodge as well as platformer player characters can.    A good example of a boss would be the Stupid Little Drill Tank (Egg Mobile-D) — in its source game, it's a very easy Warm-Up Boss with an incredibly easy-to-avoid drill. In MUGEN, its constant movement, Hyper Armor and Unblockable Attack confuses most AI-controlled characters, who get hit for huge damage as they try to flinch the Drill Tank and/or guard against its drill instead of jumping over.   
• Nostalgia Level:    There are a few Bonus Level characters that do this. The most popular ones are the ones made by Bane84. They are M-Nes_Game1 (Super Mario Bros.). M-Nes_Game2 (Contra), and M-gb_Game1 (Super Mario Land).   
• Not So Invincible After All:
  •    Omega Tom Hanks was a character that lacked attack and collision boxes on his body at all times, meaning that he could not be affected by any attacks or direct reversals. He was thought to be completely invulnerable until a code on the 2nd Death Star and A-Bomb allowed them to reverse his movie poster helpers (of which he spammed a lot of), affect his main state, and kill him.   
  •    The aforementioned A-Bomb had similar invulnerability... and was defeated by a modification of its own kill code, the same one that allowed it to kill Omega Tom Hanks no less.   
  •    Cheapies like Chuck Norris and characters with no hit/collision boxes whatsoever (like Rick Astley) could be beaten thanks to null-flood characters. Even before the start of the fight, no less.   
• Not the Fall That Kills You…: Attacks that put the opponent into a falling state can be coded to deal fall damage to an opponent. However, if the falling opponent is hit by another attack that lacks fall damage, it overrides the fall damage and the opponent will not take damage upon hitting the ground.
• Nuke 'em:
  •    The A-Bomb, a Lethal Joke Character who can completely obliterate pretty much any other character that is just as overpowered as the bomb. It can, however, be defeated by a certain character, as well as a few others that surpass it in cheapness.   
  •    The Zeeky words and the Random H-Bomb in Zeeky H. Bomb's arsenal.   
  •    Hastur has an A-Bomb move coded into him... using the aforementioned A-Bomb character.   
  •    Uncle Joel has a Shun Goku Satsu that does this to his opponent if it lands, based on a particular moment from his Shadow President streams.   
• One-Hit Kill:
  • Any character that possesses an extremely convenient one to use is almost always considered to be extremely cheap and/or a Lethal Joke Character.
  • The most dangerous one-hit kills come from null spammers and other system exploiters. They do not need to fight you—they can One-Hit Kill you before the match even starts. There is a certain type of system exploiter cheapie that can one-shot the other fighter, the engine itself, and possibly even your computer.
  •    Pingu has weaponized the Oh, Crap! reaction for a One-Hit Kill.   
• One-Hit-Point Wonder:
  •    Magikarp is KO'd from any attack. If it somehow survives 40 seconds, it uses Struggle... which will One-Hit Kill the opponent if it hits, but also KO's itself regardless of hit or miss.   
  •    The Kid from I Wanna Be the Guy. Complete with blood spatter and GAME OVER. PRESS "R" TO TRY AGAIN. Subverted in later versions where he gains super armor while facing himself.   
  •    The Space Invader is destroyed in one hit, but its laser is a lethal attack.   
  •    Flappy Bird. If he gets hit even once or if he touches the ground, he's toast. If he uses his Limit Break and bumps into any of the pipes, he's also toast.   
  •    Bokosuka Wars loses all his life if he loses the coin toss on his attack. He actually also has one hit point, meaning that if his attack is reversed for any amount of damage, he'll also get killed.   
• Overly Long Fighting Animation: Many a One-Hit Kill qualifies for this   , but special mention goes to Goldion Hammer, which has a one-minute-long animation   .
• Overly Long Name:    There's a cheap character called "O CHAR MAIS APELÃO DO MUNDO"/"The Strongest Character In The World", a giant angry stickman who only uses one attack (a fullscreen instakill performed by any button). Its name alone qualifies, but its readme mentions its joke moveset which consists of overly long Word Salad Title attacks:   
     a: Shin Mega Senpuu Retalliation Kibutz Blast Wave Kyaku   
     b: Evil Hokkaido Hiper Demon Origami Psychic Rush Shade   
     c: X-Ultra Yakisoba Rage Budoten Flaming Nakayama Drill-Peck   
     x: Super Electric Moashi Blaze Kenkoko Bin-Laden ShockWave Kienzan   
     y: Damn Mukeka Rising Nakoruru Mad Sakura Shen-Long Knee   
     z: Chain Hyakkizan Slash Kuririn Death Kimono Magnetic San-Sei UpperCut   
• Painfully Slow Projectile:
  •    Quite a number of characters have slow-moving projectiles that can be easily avoided... or can be used to cover stay on the screen for a good while so that the opponent has less breathing room.   
  •    Space Invader's only attack has it fire a single slow-moving pixelized ray that can be easily blocked or jumped over (and can only have one on-screen at a time). If this connects and isn't blocked, however, it's a One-Hit Kill.   
• Perfect Play A.I.: A good number of characters with brutal AI but don't outright cheat tend to have this, being able to block or counter at just the right moments. Some of them even have "command reading", aka their AI can respond to any attack commands the player presses, but otherwise are bound by similar limitations to a player-controlled version of themselves.
• Physical God:    Any "God" version of a character. This happens literally with the Primal Rage characters, who, uh, are gods. Also, God himself thanks to Bible Fight.   
• Play as a Boss: Several boss characters have been created for the game, and with the exception of AI-only characters most of them can be selected by the player and controlled just like any other character.
• Power Creep, Power Seep: This tends to happen when creators do not adhere to the idea of converting characters exactly as they were in the source game.
• The Power of Rock:
  •    Yoma Komatsu rocks out on her guitar and calls on the rest of her band to beat the crap out of people.   
  •    Haruhi Suzumiya calls Houkago Tea Time as one of her special abilities.   
  •    Hatsune Miku uses her songs.   
  •    I-NO's Guitar and Demon Amplifiers.   
  •    SpongeBob's Goofy Goober Rock.   
• Pragmatic Adaptation:
  • While most characters are either labelled as accurate but actually aren't, there are a number of characters that are deliberately not meant to be accurate,    such as CCI Ironmugen's Ryo or The_None's Shaq   . In some cases, accuracy may not be a good thing.
  •    Both Splode's and The_None's Thanos characters are for the most part accurate to the Marvel vs. Capcom games. However, due to engine limitations preventing the Time Gem^note which has Thanos throw a projectile which halves the opponent's speed and Mind Gem^note which reverses the opponent's controls supers from functioning as they did in their source game, both versions change said supers to completely different attacks:   
    •    Time Gem: Splode's version instead boosts Thanos' attack power and speed while The_None's version slows down everything except Thanos himself.   
    •    Mind Gem: Splode's version has Thanos teleport out of the arena before appearing as a giant in the background and raining gems on the opponent while The_None's version has Thanos split into four images of himself, which disappear if the opponent attacks the right one or causes Thanos to bring the Hulk's Gamma Crush meteor down on them if they guess wrong.   
• Press X to Die: The F1 key does this to player 2. For player 1, it's CTRL+F1.
• Purposely Overpowered:
  • Many characters, referred to as "cheap characters" are designed to be as utterly overpowered as possible, packing infinite combos and priority, high-damaging attacks and lightning-quick speed.   Rare Akuma by P.O.T.S. is one of the most iconic examples, featuring all of the above-mentioned attributes, a resurrection ability that allows him to come back from death, constantly regenerating health and energy, an immunity to grabs and the ability to instantly teleport out of combos and an instant-kill unblockable super that teleports straight to the opponent and can't be dodged.   
  • "Cheapies" are a type of cheap character who take this even further. The weakest of them are Nuke-tier, capable of using fullscreen unblockable instakills while being invulnerable to most forms of attack. Null-tiers (the second-weakest tier) and above are so powerful that can kill their opponent before the match even starts. The main types of characters they're pitted against are other cheapies, usually in a case of cheapie creators constantly trying to one-up each other in a Lensman Arms Race.
  • Certain characters who are otherwise-balanced can come with a palette that gives them cheap abilities if selected.    Daniel's 11th palette puts him in unlimited Burst Mode which makes moves that require power drain no power on use. Dancing Banana's 11th palette (aka "Rotten Banana") removes damage dampening on combos, allows him to spam projectiles, charges power quickly, and gives him an exclusive One-Hit Kill hyper.   
• Quirky Work:
  •    The Characters from the Nijikaku fighting game by the 2Chan Imageboard.   
  •    M.U.G.E.N itself counts. We're talking about Velociraptor Gods taking on a mutant cyborg Tiger Woods that utilizes a robot claw and airstrikes. Wholesome Crossdresser nuns teamed with evil witches with truth-based magic systems that beat up UNSTOPPABLE! God-powered roid ragers that spew Uncle Tomfoolery. Inside the womb of a birthing God. Reality Warpers fighting against sadistic vigilantes. And Chuck Norris.   
  •    M.U.G.E.N is still popular in Japan for this reason. Loads of Pixiv fanart based on bizarre matchups (and even pairings) exist, spawning things like a cross between Alice Margatroid and Cable due to their reliance on lasers.   
• Rage Quit:    This is parodied with Rage Rock, whose Hidden Desperation Move crashes the game.   
• Real Men Wear Pink: Since it is easy to customize the colors of the character palettes, it is easy (in most cases) to put even the manliest of men in pink clothes.
• Red Oni, Blue Oni:    Anything involving Arpa/Chainsawdentist will inevitably have him as the Red Oni, except for his videos with Ashram VII, which has more of a Crimson Oni Scarlet Oni dynamic.   
• Retraux:    Some of Masukenpu-kun's characters emulate the NES style, featuring 8-bit graphics and 2 button gameplay. So far, these characters include Gorilla, Guerrilla, Sumo, Ninja, and Kangaru.   
• Rocket-Tag Gameplay:    Any battle against the Space Invader is this, as it goes down in one hit from anything, but its only attack is a One-Hit Kill if not blocked.   
• Rule 63:
  •    Kyoko, Goeniko and Zeroko (both original and clone). Gelato is a rare female-to-male genderflip of Kula Diamond, and there is a "Shikiko" and a "Kyko".   
  •    Ryuuoutan happens to be the Dragonlord from the Dragon Quest series if he/it was a cute girl.   
• Rule of Fun: This is the only real explanation for the numerous offbeat characters available in the community.    Considering how you can pit Peter Griffin against Fat Albert against Sonic the Hedgehog against Michael Jackson against Chuck Norris if you want to   , no other explanation is really needed.
• The Sandbag:
  •    The Trope Namer, made by gncmario, is a character. However, it can't be controlled. This also makes it the ultimate Joke Character.   
  •    The same "Sandbag" also has been used for characters that can't do anything, and are just there for someone to beat up.   
• Scary Stinging Swarm:    Someone created a character based on a wasp nest. It just sits there until someone attacks it, at which point it releases a swarm of wasps to overwhelm the enemy, most of the time combo-locking them in place. Not even the Juggernaut or the Hulk is a match for the stinging bastards.   
• Schizophrenic Difficulty:
  • Characters can be placed at different level orders in Arcade Mode under the "select.def" file. There's nothing stopping the player from placing an SNK Boss as the first opponent, followed by The Sandbag as the second.
  • In addition to the Lethal Joke Characters    covered above   , there are several characters (or at least versions of characters) who are much harder or easier to take on than you might think.    Alucard's AI is pretty easy, but Team S.M.R.T's Homer Simpson can be a tough fighter, especially if he enters Riot of the Beer Mode.   
  • In general, characters from older games with extremely different mechanics and pace can have problems with characters from newer games    —think Street Fighter II versus Guilty Gear   .
• Secret Character: Played With. While the engine by itself doesn't support unlocking characters by fulfilling certain conditions, it's possible to hide characters off-screen in such a way you won't be able to use them unless you know where they are, and some characters have alternate modes you can only access by holding down the taunt buttont while selecting them.
• Self-Insert: There are quite a number of self-insert characters out there of varying quality, several of which tend to be clones of others.    Daniel is one of the most notable ones and his newest version is one of the few well-made examples.   
• Sentry Gun:    One of Donald Duck's specials is him summoning a portable turret to hit his opponents from the distance.   
• Shapeshifter:
  •    The_None released a version of Kishima Kouma dubbed "Shadow Kouma" that at first appears to be a perfectly innocent custom take on the character. Then you actually see him in action and he turns out to be a Shang Tsung type fighter who transforms into every character The_None has created for his attacks. He does have a handful of unique moves, including a team up with Ralf Jones and JoJo style tandem attacks.   
  •    Before that, there was Cerenas's Sihon (who transforms into various Samurai Shodown characters) and the collaboration between Andre Lopes and Ryan Kerns in the form of Mugena (who mainly transforms into various female characters).   
  •    Shang Tsung himself as well. OMEGAPSYCHO's version deserves special mention, as he managed to make him able to transform into nearly every MK1 character but Goro. Juano's Shang Tsung features every Mortal Kombat II character (including Jade, Noob Saibot, and Smoke) save for the bosses.   
  •    Ditto transforms into other Pokémon and uses one of their moves whenever it attacks. There's also another version of Ditto by Okihaito that transforms into its opponent entirely — graphics, sounds, portraits, moves, code and all.   
  •    Atari dragon can transform itself into various characters from videogames made from the Atari 2600   
• Shotoclone:
  •    Chilean creator Basara-kun made Eric - Unperfect Shotoclone as an Affectionate Parody with a lot of SNK and Capcom references and with Kung Fu Man as Assist Character.   
• Shout-Out:
  •    Kamek is loaded with them. He can summon one of three Pokémon at will and can use fatalities, one of which is directly based on one of Smoke's. His Troopa Rush super is admitted in his readme to be a takeoff of Tron Bonne's Lunch Rush special. Some of the objects that can fall from the sky in his Switchblock Drop super are the Egg-o-matic, the Master Emerald, a cow, and Lavos. And he can use Ultima.   
  •    Numerous characters use Mortal Kombat-esque fatalities or otherwise incorporate something from the game, such as Most_Mysterious's Dink Smallwood speaking some of Shao Khan's lines, or the "Shao Mario" from Slot Machine, which is Mario's Super Mario World-appearance given Shao's voice.   
• Showy Invincible Hero: The players who make M.U.G.E.N videos on YouTube.
  • Most of the intentionally cheap characters that aren't played for laughs focus on Rule of Cool and visual effects instead.
• Sidelined Protagonist Crossover: This occurs whenever a side character gets created before the main character of their series.    Tatsumaki and Zeus were both made playable years before their respective main characters (Saitama and Hercules) were.   
• Silliness Switch:
  •    Homer's Drunk Homer mode combines this with Turns Red (after a Cast from Hit Points).   
  •    The_Nones already made Blizzard a bit silly, with his intros having him beat the shit out of "Stone Cold" Steve Austin or descend from a Rampage building. However, his palette swap, Chaos, inserts random farting noises as a soundtrack and uses Retsupurae clips.   
  •    The use of silly soundpacks, such as using My Way Entertainment's infamous Juggernaut soundclips for, uh, Juggernaut.   
• Situational Sword: It is possible to code attacks that can only hit in certain situations. Some examples: If the opponent is in the hit state ^note Use + on the hit flags; if the opponent is not in the hit state^note Use - on the hit flags; if the opponent has been hit by a certain previous attack ^note Use chainID and set the previous attack's ID to the chainID; and if the opponent was not hit by a certain attack ^note Use noChainID and set the previous attack's ID to the noChainID.
• SNK Boss:
  • Depending on the creator, a character's AI can be written in such a way that any character (even existing SNK Bosses) can turn this trope up to eleven.
  •    Akame counts when computer-controlled. Due to her advanced AI, she is quick to pull off her moves, and she reads you like a book, meaning she can block many of your own moves and counter with her "Barrier Burst." Some of her specials can even KO you instantly!   
• Some Dexterity Required: This tends to occur as a reflection of the source game    (e.g., "The Pretzel", Geese Howard's Raging Storm command)   , although changing the command to something easier is a simple matter of character editing.
• Spiritual Successor: The readme claims that inspiration for the engine was taken from the PC homebrew Street Fighter II clone SFIBM (at least in part). It also had a modular engine that facilitated editable characters to the point that some gained new moves and others were completely broken. Not unlike many MUGEN characters.
• Stone Wall:
  •    Frost Man fits this bill. He has permanent Super Armor that makes him Immune to Flinching. He cannot be comboed, thrown, or stunned. Thanks to his high defense, he is a durable and damn near unstoppable tank. However, he also has limited attacks, does pretty weak damage (save for his Super Moves), and lacks good combos. A few characters can even break his Super Armor if they possess the right counter moves.   
  •    Plant Man from Mega Man 6 has a Power Battle version where his Plant Barrier makes him immune to all attacks. The trade-off: His regular buster (seed?) shot takes about a second to activate and can only shoot one seed at a time. It does pretty weak damage, too. He can still use his shield to attack, but that will lose his invulnerability.   
• Stylistic Suck:
  • Kung Fu Man's default intro and ending storyboards qualify, as they look like a child's crayon drawings.
  •    Most_Mysterious's (of Omega Tiger Woods (in)fame) entire creationhood can be basically summed up as this.   
  •    Dee Bee Kaw's sprites are all MS Paint.   
  •    The Dancing Banana also counts in a way, what with being a rather pixelized character, but the reason for this is because his graphics are based off the original emoticon.   
  •    ADOM's sprites count as this with clear inspiration being taken from various animation errors found in DDR's creations.   
  •    Brergrsart's True Monando Boy, being based on Shalk, naturally has this, his sprites looking like they were drawn in MS Paint.   
  •    The majority of characters made by the author Googoo64 are this. They're horribly animated, yes, but that won't stop them from kicking the asses of some of the stronger characters on the roster.   
  •    Proofed Up Matt Lohman, who can best be described as a parody of Mortal Kombat characters. His animations are poorly digitized sprites of Matt Lohman (presumably a friend of Mike Olbrecht, the character's author), has beer-related attacks, and he even does Baraka's Chop Chop special move with beer bottles (among other things that he parodies).   
• Summon Magic: Some characters do this as a Super Move by calling in a reinforcement to perform an assist    (see Kamek in the Shout-Out entry above). For example, Hatsune Miku takes this up to eleven with her super singing attacks - if she sings a soundtrack from a well known franchise, a character from the franchise comes in to perform the assist. And given how many there are...   
  •    Crazy Mukuro and Spacemouse's Nazrin Deluxe take it up to 12 by having this as their main shtick.   
• Super Move Portrait Attack:
  •    Is common to see these in characters from or based on Marvel vs. Capcom .   
  •    The_None's Shadow Kouma deserves special mention, for that he has a super move that takes this trope literally. Yup, said move involves the portrait itself hitting the opponent.   
• Super Not-Drowning Skills: Normally, M.U.G.E.N characters can breathe infinitely in underwater stages.
• Super Special Move: The default character that comes with the game is Kung Fu Man, who plays this straight with his two Hypers.    Triple Kung Fu Palm has him perform Kung Fu Palm thrice in succession, while Smash Kung Fu Upper is a much stronger Kung Fu Upper that sends the enemy flying up so high to the point where they take damage when they hit the ground.   
• The Swarm:
  •    The "Wasp Nest" character, which spawns a swarm of wasps that can very easily overwhelm an enemy thanks to dealing counterattack damage if attacked.   
  •    The "Mosquitoes" character is made up of several small, weak mosquitoes that die in one hit but are easily replaced as long as there is enough HP. They deal very weak damage individually, but their Synchronized Swarming allows them to deal Death of a Thousand Cuts when attacking.   
• Swiss-Army Weapon:    Most of 3ha's characters have custom modes based on completely unrelated characters. Among examples:   
  •    His Bishamon with Jin Saotome AND Galford grooves.   
  •    Dhalsim with a Brocken groove.   
  •    Sieger with a Blodia groove.   
  •    A Sentinel with Fio piloting it. Fio can actually eject from it so she then plays exactly like in Metal Slug series, complete with her being a One-Hit-Point Wonder.   
  •    Zangyura, a bastard child of Zangief and Godzilla of all people has a "Gorbachev" mode.   
  •    And his latest (so far) creation, Zangeese (who also comes with an optional Athena movelist....with the voice of M. Bison).   
  •    He has a Heavy D! there, which seems normal....until you hold start and he gains K's moveset.   
  •    3ha's Genjuro Kibagami uses a mixture of the Slash/Bust system of IV with the gameplay of V Special, complete with Zetsumei Ougi. Holding start while selecting him, however, lets you control his frog, which has M. Bison's moveset and voice.   
  •    A non-3ha example: the aforementioned The_None's Possessed Heita, who comes with a Captain Falcon mode.   
  •    "EVIL Sub. Rep. Scorp." It's a failed attempt to mash Sub-Zero, Reptile and Scorpion into one character. Although it does weak damage, it's too damn fast, spams a damaging teleport, takes advantage of projectile spamming to freeze the opponent, and many, many more bugs.   
  •    The Diablo Skeleton has a mode that gives it moves from Street Fighter.   
• Tag Team: An undocumented code called TagIn allows a character to change their state as well as that of their partner's, but it only functions in WinMUGEN. This can be (and often is) used for a Tag Team function as well as a Switch-Out Move.
• Take That!:
  •    Rare Akuma is the godfather of all Take Thats, aimed at shitty "Shin", "Orochi", and "Evil" edits of many characters. He has an abundance of special effects, is effectively immortal, and can kill most characters in the space of a few seconds.   
  •    There is an entire full game being made with nothing but Akumas with completely different movesets. The creator of the project, Basara-kun, admitted he did it because he was sick of all the Akuma edits going around.   
  •    Rikard's most prolific creation is Slightly Pissed Off Ryu, a parody of the various Shin, Evil, Orochi, Violent, and Holy Ryu edits on the internet. Rikard's "story" basically sets Ryu as a McDonald's bum, depressed and physically out of shape after finding his wife Sakura cheating on him with Akuma (he has appropriate, and hilarious, victory and winquotes against both of them). His Hadokens are usually a pathetic short range burst, his Shinkuu Hadoken may U-turn right back into his own face, he falls flat on his back after a Shoryuken, his Shin Shoryuken blows up on himself, he sometimes breaks his ankle when he does his trademark Hurricane Kick, and one of his other attacks has him lobbing either a McDonald's meal or M. Bison's corpse at his opponent. Most Ryu edits run on graphics over gameplay; this one runs on pure Rule of Funny.   
  •    P.o.t.S released Bison...literally. It is an actual bison with M. Bison's cap on its head. It uses distorted versions of Norio Wakamoto's voice clips from Capcom vs. SNK 2: Mark of the Millennium as well as clips from the Animated Adaptation. Given the inspiration, Bison is balanced as a boss character—he has high stamina, infinite prevention measures, and an AI that takes full advantage of the character's high power. Instead of being a Take That! to cheap characters as Rare Akuma was, Bison is a Take That! to joke characters and serious characters, simply by existing. Hilarity did indeed ensue.   
  •    Arpa's Casual Evil Ryu is a huge-yet-sly Take That! to Infinity Mugen Team's "Eternity of Heroes" character template (and its many, many flaws), amongst other things. He outright says so in his True Readme...which is written in Saurian and also features a Take That! to that game.   
  •    Two particularly infamous badly-made characters by the same author (Peter Griffin and Bender) were glitchy messes that flashed in weird colors, had very limited animation, overpowered stats and nonsensical attacks. Ironcommando made a character named "20000" that murders both of those characters during his intro.   
• Taking You with Me: There are a few instances where characters can take the opponent down with them. In many cases, the one who pulled this off will be considered the victor.
  •    The Creeper's only attack has it explode, which kills itself and deals a massive amount of damage to the opponent. It counts as the Creeper's victory if the opponent dies from it.   
  •    Wobbuffet's Destiny Bond will take down its opponent if they kill it when it's active. This counts as Wobbuffet's victory, and its tail will be shown to move after that.   
  •    When the Dragon Tank is defeated for a second time, it blows up for heavy damage. If this explosion defeats its opponent, it counts as the Dragon Tank's victory.   
• The Dragon: Kung Fu Man's Evil Doppelgänger serves as this to Suave Dude.
• There Is No Kill Like Overkill: Anything involving lots and lots of blood, characters with lots of flashy effects, and any attacks that reach the 999 combo limit.
• Time-Limit Boss:    Yee (yes, that Yee) is essentially this, since each time Peek finishes his song, Oro's head will pop in as an unblockable, fullscreen attack that will kill most characters within four hits.   
• Took a Level in Badass:    In a meta example, AI Patches can do this to a character. Several characters lack a proper AI and tend to use moves randomly from their whole command list, making them unreliable in fighting. With a proper AI installed, however, they can perform far better in a fight.   
• Training Stage: This is one of the two stages that comes pre-packaged with M.U.G.E.N (along with Kung Fu Man's stage), and is often used for character demonstrations due to both the ready availability and the lack of distracting, flashy scenery.
• Ultimate Showdown of Ultimate Destiny: This bears repeating—every fighting game character in history, and then some.
• Unexpected Gameplay Change: It is theoretically possible to import any character from any game, not necessarily fighting games. This trope is the end result if the characters are ported with their source mechanics.    For instance, there are versions of Marisa and Patchouli, using their Mega Mari sprites and gameplay.   
  • Certain bonus stages can be this. One minute you're fighting your opponent; the next, you're dancing DDR style or going through World 1-1 from Super Mario Bros.
• Units Not to Scale: The majority of characters based on Kaiju or Humongous Mecha don't take up much more of the screen than normal-size characters, since they're designed to stand alongside other characters of their type (usually due to coming from, or being based off, a fighting game with a roster consisting only of such characters).    Of course, given the expansive roster of characters with sprites not much smaller than said "large" characters, it's easy to end up in situations where Garfield is only half the size of Mothra, or The Juggernaut stands nearly as tall as Big Zam. One particularly exaggerated example is SCP-2317-K, who's 200 kilometers tall in canon, but only around the height of normal characters here.   
• Unskilled, but Strong: Some characters, to make up for not having AI, have inflated attack stats. This can range from a slight damage increase to taking off chunks of your health in a single hit, or even taking you out in a single blow.    Many Dragon Ball characters fall under this category. The most well-known example is Raditz - or, excuse me, Radish SSJ4, who, while not having any AI at all, has 6500 HP, 500 defense, and an attack stat of 2500^note In comparison to the base stats of a Mugen character, Radish has 6.5x HP, 5x defense, and 25x attack power. It can be easy to beat him without taking a hit if you know what you're doing, but if he lands an attack, well... Heaven forbid if he actually decides to use a super on you.   
• Unwinnable by Design:    Any fight against Oni-Miko-Zero, Debugger (if he is on P1's side), or any registry editor-based character for that matter.   
• Unwinnable Joke Game: Or "Unwinnable Joke A.I. Setting" in this case. There are normally-defeatable characters who have joke AI settings that make them nigh-impossible to defeat:
  •    As a Call-Back to his more egoistical, cheap character-focused days, Ironcommando's normally-balanced Dancing Banana and nerfed Elque edit both have a joke AI setting that must be activated by the player in their configuration files. Setting their AI variable to a specific number^note 9001 and above for Dancing Banana, 666 for Elque makes them invulnerable while spamming hypers and instakills at no cost, and Elque in particular gains a move that can even KO Omega Tom Hanks. His SCP-999 also has a few AI settings that make it have extremely broken traits 49, 9, and 409 give it a Touch of Death, 682 causes it to quickly adapt to damage, 343 gives it God Mode, 2935 makes it KO everyone in the battle, etc.   
  •    Yee will summon Oro after Peek finishes singing to deal a fullscreen, unblockable attack that hurts a lot. Peek's singing speed gets faster and faster as Yee's AI level increases, but if one sets the AI level to 8, Oro will constantly be summoned, killing most characters in a jiffy.   
• Video Game Caring Potential:
  •    Deltarune trio can spare their opponents who have low health. The victory goes for the trio, but they allow the opponent to use their Victory Animations alongside them.   
  •    Several Mortal Kombat (or MK-inspired) characters come with Friendship moves that can be used to nonlethally spare their defeated opponent.   
  •    SCP-999 is a very odd example in a Fighting Game engine where the goal is to knock out or even brutally kill your opponents. Its "attacks" deal no damage or even heal the opponent and consists of things like hugging the opponent or throwing candy at them to make them happier until they begin dancing for the rest of the round (which counts as a KO), allowing SCP-999 to defeat its opponents without hurting them. It also comes with two winposes that mimic the Mortal Kombat friendships mentioned above.   
• Video Game Cruelty Potential: Certain characters can attack or KO their opponents in rather gruesome ways if you activate their special moves, Super Moves or Fatalities.    This is the standard for characters from Mortal Kombat, Samurai Shodown, Black Heart, or any other characters with similar brutal and gory moves.   
• Video Game Perversity Potential: Considering how most of the fighters and stages are fan-made content, this was a given. There are many NSFW fighters that have questionable sprites and attacks, and there are stages that have a rather... dirty feel to them.
• Virtual Training Simulation: One of the two stages included in the game is the "Training Room", which is based off other training rooms from other fighting games.
• Weak, but Skilled: Some characters have AI that, while dealing little damage in one attack, can pull off absurdly long combos, in some cases even being able to take the opponent from full health to none without letting them act once. To say nothing of characters with AI that abuses an infinite combo.
• Wolfpack Boss:
  • Several characters are designed to be this.    Notable examples include the AI-only "Biohazard", the Alien Queen (under the default palette), and even the Mad Gear Gang.   
  •    The "Strength Training" minigame pits your character against a swarm of Beat 'em Up-style Mooks. This is sometimes used by series creators for mook fights.   
  • With some luck, you can hack stages to create an odd variant of this.
  • An experienced coder can code this onto any character, making that character attack in a Zerg Rush of easily-defeated clones.    A good example (and possibly the codifier of this for M.U.G.E.N) would be Most_Mysterious' Rox Howard Clones.   
• Would Hurt a Child: Inevitable with child characters available to not only play as, but fight against.
• You Don't Look Like You: This trope comes up whenever a character suffers from shoddy sprite work.    Adrien's Buzz Lightyear is the shining example: being a poorly done Zangief sprite edit, he looks more like Zangief wearing a cheap halloween costume than the beloved space ranger toy he actually is.   
• Zerg Rush:    There's a cheap character that's essentially a huge swarm of mosquitoes, each of which have low attack damage, die in one attack, but continuously respawn as long as it has enough health. Killing a mosquito reduces the character's health bar. However, their Synchronized Swarming attacks make them a huge threat via Death of a Thousand Cuts.   

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