History Characters / FiendFolio

** Additionally, unlike Jacob & Esau, or any of the items that give a temporary extra character, the player only controls one of the Bastard's copies while split up, with the other copies clustering around the player. This, plus their small size, makes it less likely for the other copies to get caught on objects.

* EasterEgg: They die in one hit to the Gamekid or Power Pill effect. Which is appropriate, considering...

* EasterEgg: Just like Great Gideon, killing the Sun's body with the Chaos Card will both instantly end the fight and grant the player an extra item.

* AlmightyJanitor: Averted. He's a janitor, but he's not good at anything else

[[folder:Feint]]

[[folder:Tainted Fiend, the Bastard]]

* MixAndMatchCritters: The tapeworms Luncheon spawns have three segments: A head, a torso, and a tail.

* ShoutOut: Some of the hats given by Birthright include [[{{VideoGame/Pikmin}} Captain Olimar's helmet, a flower]], [[VideoGame/SuperMarioBros Mario's hat]] (but with an "F" in place of the "M"), [[VideoGame/TeamFortress2 the Ghastly Gibus, the Tyrant's Helm]], and a pair of [[WesternAnimation/DespicableMe googly-eyed goggles]].

A gilded cauldron filled with viscera who commands a solar system of organs to defend itself.

->Debut: ''Reheated''

->Debut: ''Reheated, returning from Devil's Harvest''

->Debut: ''Reheated''

->Debut: ''Reheated''

* MeaningfulName: China as in "fine china", another word for porcelain.

[[folder:Fend]]

A yellow imp who is Fiend's janitor and best friend. He can't normally be selected, but the player may "unlock" him by editing the 'players.xml' file

* AlmightyJanitor: Averted. He's a janitor, but he's not good at anything else

* DemBones: She appears to be made of bones, [[ArtisticLiscenceBiology which real spiders don't have]]

* DemBones: She appears to be made of bones, [[ArtisticLisenceBiology which real spiders don't have]]

->Debut: ''The Devil's Harvest''

[[folder:Alien Loki/Lokii]]
->Debut: ''Reheated'' [[note]]Alien Lokii debuted in the Spitshine Update[[/note]]
A Green Loki of unknown origin
----
* AlienBlood: Fittingly enough, their innards appear to be purple

[[folder:Kidney of Infamy]]

A Mask of Infamy that is, for some reason, overjoyed that her heart is now a kidney

[[folder:Grinch Krampus]]
->Debut: ''Spitshine Update''
A Krampus based on [[WesternAnimation/HowTheGrinchStoleChristmas another famous Christmas hating prick]]

[[folder:Fiend Mom]]

* ShoutOut: Their movement pattern is based on the Boo Buddies in ''VideoGame/SuperMarioWorld''.

A posthumous Little Horn whose attacks are now more incendiary than explosive.

!Bosses
!!Chapter 1
[[folder:Buck]]
->Debut: ''Fiend Folio''
->Floor(s): Basement

A large beggar wearing a burlap sack over his head.

* BagOfHolding: Buck's bag contains blood, bombs, and smaller bags (that turn into {{Mooks}}).
* KingMook: To the Snagger enemies.
* OffWithHisHead: Defeating him makes his bag mask fall off, revealing that he has no head.

[[folder:The Whispers]]
->Debut: ''Reheated''
->Floor(s): Cellar

A trio of ghosts found haunting the Cellar.

* TheDividual: All three ghosts share the same health pool. When one of them dies, they all die.
* EasterEgg: Taking a photo of them with the Toy Camera item shows a fourth ghost that the other three orbit around.
* ShoutOut: Their movement pattern is based on the Boo Buddies in ''VideoGame/SuperMarioWorld''.

[[folder:Honeydrop]]
->Debut: ''The Devil's Harvest''
->Floor(s): Cellar

A colossal bee found in the Cellar.

* BeeAfraid: Honeydrop is relentless. After losing half of her health, she launches her stinger and continues fighting anyway.
* FlunkyBoss: Honeydrop constantly summons other bee enemies.
* KingMook: Of the various bee enemies Fiend Folio added to the Cellar.

[[folder:Griddle Horn]]
->Debut: ''Fiend Folio''
->Floor(s): Burning Basement

A posthumous Little Horn whose attacks are now more incendiary than explosive.

* PlayingWithFire: Griddle Horn coughs up clumps of burning coal, which can ignite the gunpowder his other attacks leave behind.
* PowderTrail: An variation without explosives. The gunpowder catching fire serves as the hazard instead.

[[folder:Buster]]
->Debut: ''Fiend Folio''
->Floor(s): Burning Basement

A large fly with burnt skin who attacks alongside his minions known as "Commissions".

* BadBoss: Some of Buster's attacks involve setting his Commissions on fire, and chewing them up to spit at Isaac.
* EyelessFace: Buster lacks eyes, unlike most of the fly enemies.
* KingMook: To the Boom Flies.
* MadeOfExplodium: When defeated, Buster begins ticking and eventually explodes, which can damage Isaac if he's too close.
* PlayingWithFire: Leaves behind a trail of fire when he charges.

[[folder:Meltdown]]
->Debut: ''Reheated''

One of the Modern Horsemen of the Apocalypse, representing nuclear winter.

* BadBoss: Meltdown punches his horse mount to attack, and when going into phase two, he tosses it to the ground in anger.
* BodyHorror: Meltdown's body looks as though it's melting, so much that he's effectively fused to his horse mount, and his flesh sloughs off into Falafel minions as he takes damage.
* DemBones: Reduced to a skeleton in phase two.
* SicklyGreenGlow: In phase two, Meltdown's head is engulfed in green fire.

!!Chapter 1.5
[[folder:Ghostbuster]]
->Debut: ''Reheated''
->Floor(s): Downpour
A posthumous Buster, now a ghost who attacks with his ghostly minions known as "Emissions".

* FireWaterJuxtaposition: In contrast to the living Buster's fire attacks, Ghostbuster instead uses water.
* NonHumanUndead: Ghostbuster is the ghost of a fly.
* ShoutOut: To ''{{Film/Ghostbusters}}''.
* VacuumMouth: Uses this to suck in his Emission minions, as well as Isaac. He also does it when defeated before exploding.

[[folder:Cacamancer]]
->Debut: ''The Devil's Harvest''
->Floor(s): Dross
A large mage made of pure poop.

* DungFu: Obviously.
* FatBastard
* {{Gasshole}}
* LastDitchMove: Upon death, he fires out multiple projectile patterns, ending with an explosive shot that detonates the gas clouds he leaves behind.
* ToiletHumor: He's made out of poop.
* {{Whatevermancy}}: ''Caca''mancy.

!!Chapter 2
[[folder:Battie]]
->Debut: ''Fiend Folio''
->Floor(s): Caves
A large bat with an ill temper.

* GroundPound: She flies into the air and slams down, creating shockwaves of stone.
* KingMook: To the various bat enemies.
* {{Wraparound}}: One of Battie's attacks has her charge across the room several times in this manner, leaving behind a trail of blood shots.

[[folder:Kingpin]]
->Debut: ''Fiend Folio''
->Floor(s): Caves
A large worm who burrows in and out of the ground while chasing Isaac.

* BulletHell: Every time Kingpin leaps out of the ground, he leaves behind trails of stationary bullets that can quickly fill the room.
* KingMook: To the Weavers.
* NonIndicativeName: Despite having "Pin" in his name, Kingpin acts more like a cross between Larry Jr. and one of Fiend Folio's Weaver enemies.
* SegmentedSerpent: Just like Larry Jr., killing one of Kingpin's center pieces causes him to split into two.

[[folder:Slinger]]
->Debut: ''Reheated''
->Floor(s): Catacombs
A skinless humanoid creature with a spider egg sack for a head.

* TeethFlying: When Slinger first enters the room, he faceplants and leaves a tooth on the floor that generates red creep until it's destroyed.
* UseYourHead: Slinger can spawn spiders by lobbing his head, which naturally grows back.

[[folder:Monsoon]]

->Floor(s): Flooded Caves
A BlobMonster made entirely of water.

* IHaveManyNames: While "Monsoon" is the default, there are options to change his name to "Moistro", "Jack the Dripper", or "[[OverlyLongName Jack Moistro the Monsoon Dripper]]".
* KillItWithWater: A water drop monster who sprays water and bubbles to attack.
* KingMook: To the Drop enemies.
* MythologyGag: Monsoon reuses Monstro's sound effects from the original Flash ''Binding of Isaac''.

[[folder:Aquagob]]

->Floor(s): Flooded Caves
A large blue severed head who spits water and bubbles at Isaac.

* KillItWithWater
* KingMook: To the Horf enemies.
* MookMaker: He can summon Horf variants called Aquababs, and some of his bubbles contain flies.

!!Chapter 3
[[folder:The Organization]]

->Floor(s): Depths
A quartet of ghosts, each possessing a single organ. They consist of Chaser (brain), Speedy (heart), Bashful (eye), and Pokey (intestines).

* AttackItsWeakPoint: Only Chaser's brain is vulnerable to damage. All of the other ghosts are invincible, including Chaser's brainless body when he throws it, and block Isaac's shots.
* EasterEgg: They die in one hit to the Gamekid or Power Pill effect. Which is appropriate, considering...
* {{Expy}}: They're basically the ghosts from ''VideoGame/PacMan'', with their names and movement patterns taken from the original game: Chaser is Blinky's Japanese title, while Speedy, Bashful and Pokey are the English titles for Pinky, Inky, and Clyde.
* {{Irony}}: Despite containing the quartet's guts, Pokey himself is ''[[DirtyCoward gutless]]''.
* MeaningfulName: Chaser chases, Speedy is fast, Bashful is bashful, and Pokey is slow.
* PunnyName: "Organization" is a play on how there's not only four ghosts, but that each of them contain an organ.

[[folder:Gutso the Great]]

->Floor(s): Depths
A massive, overbloated humanoid figure the size of Gurdy, whose eponymous gut hides a nasty secret...

* BodyHorror: After taking enough damage, Gutso's stomach tears open and his innards begin attacking.
* FatBastard: Gutso's so fat he can't even move.

[[folder:Luncheon]]

->Floor(s): Necropolis
A massive, sock puppet-like worm creature, from whose maw spill other, smaller worms.

* FlunkyBoss: Luncheon spits up tapeworms to fight on its behalf. After killing enough worms, Luncheon is defeated.
* MixAndMatchCritters: The tapeworms Luncheon spawns have three segments: A head, a torso, and a tail.

[[folder:Pollution]]
->Debut: ''Fiend Folio''
->Floor(s): Dank Depths
One of Meltdown's colleagues among the Modern Horsemen, though HIS gimmick is evident from his name.

* BadassBiker: Pollution's horse is also a motorcycle.
* BreathWeapon: His horse can breathe fire, which carries over into phase 2 when Pollution wears its head in place of his own.
* CarFu: Pollution will run Isaac down on his horse-cycle, and when phase 2 of the fight begins, he kicks the horse's remains at Isaac.
* DefeatEqualsExplosion: Pollution explodes when defeated. Unlike Buster, however, this can't damage Isaac.
* OffWithHisHead: The transition into phase 2 begins with Pollution losing his head and replacing it with his horse's.

[[folder:Tsar]]
->Debut: ''Reheated''
->Floor(s): Dank Depths
The foulest-smelling entity in all of Fiend Folio, Tsar is a blob-like creature who can alter its bodily composition by absorbing a number of foul substances.

* GetBackHereBoss: Between hiding inside grates and bouncing out of range of Isaac's tears, there are few opportunities to deal damage to Tsar.
* GroundPound: He can hover in the air and slam down, not only trying to smash Isaac, but also causing the pipes in his room to spread creep on the floor.
* MuckMonster: Tsar's body is made up of not only tar, but sewage and corrosive sludge as well.
* VomitIndiscretionShot: Upon his death Tsar vomits up his whole body, leaving him as just a withered skeleton.

[[folder:Junkstrap]]
->Debut: ''Monthiversary Update''

A massive skull armed with and protected by tar, trash and a massive football helmet.

* {{Expy}}: Visually, he resembles The Gate from base ''Isaac'', but made of garbage and wearing a football helmet.
* KingMook: To Fiend Folio's Dope's Head enemies.
* SpikesOfDoom: Junkstrap can line the edges of his boss room with spikes, which he'll try to push Isaac onto.

!!Chapter 3.5
[[folder:Warp Zone]]

->Floor(s): Mausoleum
A sentient portal with an ill will and a propensity for tricks. Who knows what lurks on the other side...?

* BossRush: Part of Warp Zone's boss fight is dedicated to fighting warped versions of earlier bosses: Monstro, Larry Jr., and Gemini.
* IHaveManyNames: Warp Zone's name can be changed to "Warp Zooooooooone" or "Mega Portal".
* KingMook: To the Portal and Mini-Portal "enemies" from the base game.
* KungFuProofMook: Warp Zone is one of the few bosses immune to the Chaos Card. Throwing it at him has him CatchAndReturn it, turning Isaac into The Lost if it hits him.
* ShoutOut: To ''VideoGame/SuperMeatBoy''. The "Warp Zooooooooone!" sound clip even plays during the VersusCharacterSplash.

[[folder:Dusk]]
->Debut: ''Reheated''
->Floor(s): Mausoleum
A strange, bony, long-armed shadow creature with tricky effect tears and a mean streak a mile wide.

* CreepilyLongArms: Skeletal ones, at that. At least in his first phase.
* DoppelgangerSpin: Dusk has two variants on this. One where he spawns a bunch of spectral versions of himself before lunging at Isaac, and one where he orbits Isaac alongside three copies that are colored differently than the true one.
* FlyingFace: In phase two, Dusk is reduced to just his skull.
* WingDingEyes: Violet spirals.

[[folder:Madomme]]
->Debut: ''Spitshine Update''
->Floor(s): Gehenna
A fiendish dominatrix suit with a queenly taste for inflicting pain. Leads her loyal army of bitches into battle.

* ChessMotifs: Madomme and her bitches have this sort of motif going. G-Imps are Pawns, Horses are Knights, Castles are Rooks, Glorias are Bishops, Champ is the King, and Madomme herself the Queen.
* VideoGameCrueltyPunishment: Champ is normally harmless and invincible, but killing her using a Chaos Card or other instant death effect causes several G-Imps to spawn in retaliation.

!!Chapter 4
[[folder:Basco]]

->Floor(s): Womb
A large, spiced-up poop monster with a penchant for rolling and a rather heated reaction to spicy food.

[[folder:The Sun]]
->Debut: ''Fiend Folio''
->Floor(s): Utero
A gilded cauldron filled with viscera who commands a solar system of organs to defend itself.

[[folder:Peeping]]

A mobile eyelike creature with a nasty glare and its sights set on conflict.

* ChessMotifs: G-Imps are Pawns, Horses are Knights, Castles are Rooks, Glorias are Bishops, the Champ is the King, and Madomme herself the Queen.

* BossRush: Part of Warp Zone's boss fight is dedicated to fighting corrupted versions of earlier bosses: Monstro, Larry Jr., and Gemini.

A bandage-wrapped creature who neither moves nor attacks, but comes with many strange tricks up her sleeves.

A sentient Teratoma-like entity piloting the remains of Mr. Ed, in whose busted-open head it reclines.

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

->Debut: ''Reheated''

The foulest-smelling entity in all of Fiend Folio, Tsar is a bloblike creature who can alter its bodily composition by absorbing a number of foul substances.