Undertale / Fanon - TV Tropes

Sans, Papyrus and W. D. Gaster

The skeletons in particular invite a ton of this:

Sans is too lazy for his own good. To the point that he'll fall asleep while doing extremely simple tasks.
The only jokes Sans knows are puns. In addition to this, it's common to see him in fanworks as making puns much more often than he does in-game—in some cases, practically every other sentence even in more serious situations.
Sans is incredibly overpowered, to the point where it's impossible to beat him.
Sans is openly depressed and literally no one notices. ^note
There have been different fan interpretations of Sans apparently having only 1 HP, including him being able to take increments of decimal damage to it (such as what happens to the player at the climax of Asriel's boss fight in the pacifist run), or otherwise him being able to die from something as simple as tripping on a rock. Some fans have also suggested that Sans gets around this by sleeping to restore HP above his maximum level, given that it's possible to do this in-game by sleeping at Snowed Inn.
Sans is a Knight Templar Big Brother. To the point that he'll kill someone for even ''insulting'' Papyrus.
Papyrus is full of himself, but not to the point where he's unbearable. He also makes spaghetti because he thinks people like it (though he's bad at it) and he makes lots of puns of his own (especially in phone calls), while mostly finding Sans's puns to be bad due to overexposure or otherwise. However, according to the fans, puns are Papyrus's Berserk Button and he'll fly into an Unstoppable Rage after hearing one, he makes spaghetti because he likes it, and to him, It's All About Him.
Sans calling Papyrus by the affectionate nickname "Pap" or "Paps".
As a stylistic choice, many fan artists depict Sans as literally being chubby, in-spite of his being a skeleton.^noteHe's not fat, he's big boned! Which led to the popular fanon that both he and Papyrus both have some "Ghost Flesh" or other magic organs of sorts that they can manifest at will.
Papyrus is often associated with the color red or orange while Sans is associated with blue, presumably because that's the color of their outfits. This leads to things like Papyrus's magical abilities being depicted as orange in contrast with Sans's blue (even though both brothers use the same blue and teal colors for their abilities), and drawings with anything non-skeletal on their bodies (blushing, body fluids, the aforementioned "ghost flesh", etc.) being in these colors as well, even though Papyrus visibly has a normal pink-colored blush during his date ^note, and Sans probably bleeds red, assuming it's not actually ketchup).
Sans's sprites have a pair of curved lines just under his eyesockets; what these are are never specified, but fandom tends to agree that they're bags or dark circles.
Sans's mouth is usually portrayed more expressively within fanart than it is within the official game. While the game usually portrays him with a jovial or sinister grin (only tweaking it slightly under certain conditions as to not make it seem jovial), fanarts tend to change the shape of said grin to make it more obvious he's not feeling happy at the moment, if they don't remove it altogether. Likewise, many people depict Sans as rarely opening his mouth while speaking, presumably because he's one of the few characters in-game who doesn't animate while talking (a few others being Undyne under certain situations and Alphys under most situations).
Sans's Offscreen Teleportation are universally called "Shortcuts", based on several lines of dialogue where he says he knows a shortcut immediately before walking you away from the destination or towards a dead end, but arriving at the same place anyway; he never openly associates them as the same thing, and there's no indication he's using his teleportation or actually meaning a shortcut at face value.
It is very, very common to depict Sans keeping/wearing Papyrus' red scarf as a Tragic Keepsake during a genocide route, to the point where it's pretty much a shorthand way for fanartists to tell the viewer "this is Sans in a genocide route". Such a connection is never even hinted at in-game. As an aside, this is usually complimented by Papyrus keeping/wearing Sans's jacket in fanart related to the hypothetical Genocide route where Sans is killed first instead.
It's very popular to depict Sans's hoodie with fluffy or furry lining on the hood, despite official artwork and merchandise showing that's not the case.
Sans's one-time occurrence of drinking a bottle of ketchup when you go with him to Grillby's is often wildly exaggerated into ketchup being a Trademark Favorite Food of his. Alphys does mention him liking ketchup-flavored chips during the first anniversary Q&A in a possible case of Ascended Fanon.
Sans's Glowing Eye of Doom during the final battle of the Genocide route has inspired some creativity in the fandom. In the game, it only starts glowing when he's using any of his Mind over Matter attacks on you, but some fans depict it acting up whenever he's using any kind of attack (likely for dramatic/symbolic effect) or feeling particularly strong negative emotions, which somewhat conflicts with the in-game implication that his eyes turn black to indicate this. Fans have also taken liberties regarding what the glowy-stuff actually looks like; because of the game's simple sprite design, it only appears to be a flashing blue iris and nothing more, but many fans draw it being flame or neon-like, often taking the form of Magical Eye Streamers.
Sans is sometimes drawn with a blue tongue and fangs, despite never being shown opening his mouth. This has become ridiculed by some fans, however.
When Sans is defeated after his boss battle, something red starts to come out of him. Opinions vary widely as to just what this is: the most obvious answer would be blood, but monsters are explicitly stated to turn to dust after they die, so this is unlikely. Other common interpretations include ketchup, which Sans is shown to enjoy drinking on other routes, and raw Determination.
Fans really seem to like the idea of W.D. Gaster being Papyrus' and Sans's father. They do likely have some connection, Sans uses "Gaster Blasters" in an attack, for example, but whatever it is, the game doesn't elaborate on it.
A popular fanon origin story for Sans and Papyrus is that they're creations of Gaster's, typically his clones. Some play this for drama, with Gaster performing horrible experiments on the brothers, while others go for a lighter take and simply characterize Gaster as an eccentric scientist who wanted children, or a scientist that got attached when an experiment produced unintended results.
Fans seem to have unanimously agreed that the mysterious entity found in the Dummied Out Room 269 (the entity in question is identified as spr_mysteryman by the game's code) is W.D. Gaster. This is not confirmed, but you wouldn't know that going by the fandom — even the Undertale Wiki and Fangamer tarot cards (which use licensed-out fanart rather than specially-commissioned illustrations) go with it. In the same vein, for all the different ways fans have chosen to design Gaster for their fanart, it's also just about unanimously agreed that he has a circular hole through the center of each of his hands. The ambiguous way his sprite is designed could be interpreted this way, but you'd be extremely hard pressed to find one artist that doesn't. His clothing is likewise very vaguely depicted in the sprite, but fan art will usually depict him wearing a black jacket or longcoat over a white turtleneck.
Some people interpret the Mystery Man sprite as not only being Gaster, but also him after he's been injected with determination and he had a less creepy appearance before. It's ambiguous when the experiments involving determination were made, so it's possible that they happened after Gaster fell into his invention.
Gaster tends to be interpreted by fans as being mute and communicating by sign language, due to being referred once as "the man who speaks in hands". While it's not an invalid interpretation (we never see Gaster communicate in a way that portrays his physical actions), the line likely refers to his Wingdinglish containing hand symbols.
Sometimes, the Gaster Blasters are portrayed as the "pets" of Sans and Papyrus. They can be surprisingly cute for floating skulls that shoot giant laser beams.
Some fan projects have Gaster being stuck in a Void Between the Worlds where he's able to observe the world but unable to interact with it, even though such a concept in never even hinted at in the game at any point. All that is said bout Gaster's fate is that he was "scattered across space and time". To be fair, the former is much easier to portray than the latter, so it's done more out of simplicity.
It's never specified in-game what is the 'invention' Gaster fell into. However, fans usually assume it's the CORE, since it's the one thing we know he created. However other fans speculated that it might be the Determination Extraction Machine (which is found in Alphys' lab, but it's implied that Alphys didn't design it herself), or the machine found in Sans' secret lab, or even something else entirely.
- Riding off of this, it's also assumed that everyone who falls inside the CORE has the potential to end up like Gaster.
It is not entirely clear *when* Gaster was the royal scientist. We know that Alphys is his direct successor, and that it took Asgore a 'long time' to replace him - but that still leaves a very vague timeframe. Many fans make him a contemporary of Chara and Asriel, mostly because it gives the two of them more characters to interact with.
Sans's voice has been interpreted as sounding identical to Cr1TiKaL so often that he pointed it out in his video playing the game, saying that he had gotten a ton of messages and emails telling him about how well his voice would fit. On the other hand, despite his Voice Grunting being rather coarse and comparably deep to Sans', Papyrus is frequently interpreted as having Skeletor's nasally whine, since they're very comparable to each other as skeletons that are at-times ineffectually evil. Fan voice actors took the idea, ran with it, and gave the fanon voices a sort of Vocal Evolution where they're not straight impressions of the source voices, but still have the qualities of them, with Papyrus being higher pitched with a tendency to roll his r's, and Sans having a low, drawling voice. Similarly, some fans interpreted Sans having a similar voice to Patrick Star which might have possibly been Toby Fox's intentions after it was discovered his voice grunting was sampled from a line in "Something Smells"; "Maybe it's the way you're dressed?"
A popular joke/plot point in fan material is Sans having a ridiculously high tab at Grillby's that he never pays off, so much so that "pay your [optional expletive] tab" is practically Grillby's fanon catchphrase. Although we do see him put a meal on his tab at one point in the game, we're not given any definite evidence that he does this regularly, and the notion that he does actually conflicts with the bird monster's statement that Sans is one of Grillby's best customers (of course, said bird monster later admits that he's making everything he says up, so that doesn't really mean much).
- Related to the above, it's often joked that by killing Sans, you inherit his tab which is a big reason for Grillby to come after you (on top of killing his friends and customers). In fact, if you look up a Grillby version of Megalovania, it will almost always be a remixed version of Megalovania played backwards. This is oddly fitting as Grillby is part of Sans' last thoughts after you beat him in a genocide run. The line below is one of the jokes that would be shown during his fight.
  He'd offer you mercy, but he never touches the stuff.
- Furthermore, it's often stated how hard his fight would be as fighting a fire elemental in close quarters combat with a knife would be a remarkably bad idea. Plus, a lot of fans suggest he would carry a 1000 degree knife/sword.
Fans often agree that Papyrus has access to the Gaster Blaster attack. There's not much to indicate he does other than his "non-bone attack." However new dialogue from the 1.001 update supports this a touch: After abandoning a Genocide route at Papyrus, in his room is the box of unused bones. When examined:
Papyrus: HAD I ONLY USED MY SPECIAL ATTACK, YOU SURELY WOULD HAVE BEEN BLASTED TO... HEY. WAIT. WHERE'S MY SPECIAL ATTACK?
- Related to above, a common theory is that Papyrus is as powerful or even stronger than Genocide Sans but is Willfully Weak because of his kind nature. There's some dialogue in-game potentially supporting this, with Undyne claiming that Papyrus is "really freaking tough," but exactly how tough is left open to interpretation.
Since, when killed on a Genocide run, Papyrus's head falls off and dissolves much later than the rest of his body, it's a common theme in animations to depict Frisk/Chara stepping on his head to finish him off.
When Papyrus appears in artwork, all his bones apart from his skull commonly appear black. This likely comes from his limbs appearing black in the overworld, although his battle sprite shows his bones as white.
Sans' slippers are very often depicted as pink in fanart even though nothing in-game suggests this (his feet are white in the overworld sprite and his Steam trading card shows him in blue and white sneakers), to the point where even the Sans skin in Super Smash Bros. Ultimate puts him in pink slippers.

Flowey

Flowey tends to be drawn with two leaves in order to make him more expressive despite not possessing any in his normal form.

Frisk

As a popular stylistic choice, fan art of battles will almost always show a human's SOUL as a heart floating a short distance in front of or inside of them. This is mostly to help such art make sense, as otherwise a full combat floating heart looks awkward at best.
Relatedly, it is generally taken that the main trait of Frisk's SOUL is determination because... well, it comes up a lot with Frisk. This is not confirmed outright or jossed by the lore that can be found in-game about human SOULs.
A lot of people interpret the protagonist as being completely mute or unable to talk. This doesn't make a lot of sense because that would render them unable to talk to people on the phone, but regardless the idea persists. A common variant of this is to interpret them as being mute by choice. They are often presented as being fully capable of speech, but preferring to communicate with sign language. A possible explanation for why this is popular is simply that ambiguity is such an integral part of the protagonist (to the point that calling Frisk "he" or "she" is enough to start a flame war) that even assigning a certain voice to them just doesn't seem right.
A pretty popular "after the Golden Ending credits" theory is the idea that Frisk came back and retrieved Flowey in the underground, with the determination of including him in their new family in the hope of eventually redeeming him. Cue Flowey learning (though always perplexed and unwilling) from all the main characters.
As mentioned with The Fallen Child example below, Frisk is depicted as gender-neutral in canon, never explicitly referred to as male or female, but the fanart of them as a teen/young adult tends to lean more on the latter (albeit slightly). A third interpretation is that Frisk is described as they/them because they're non -binary.
Possibly linked to the gender representation, Frisk is often drawn wearing shorts despite the official promo art of the game showing them in pants (even if more official artwork◊ shows them wearing shorts now). While both are gender-neutral, pants can lean towards a male interpretation and shorts towards a female one.
Like the Fallen Child, Frisk is very commonly believed to have red eyes (though according to the promo art before the game came out Frisk's eyes are actually brown), and to have been a victim of abuse and/or neglect, leading them to climb the mountain or having been abandoned there (with the Abandoned Quiche easter egg helping fuel the latter). The fact that there's even a choice of whether to stay with Toriel or not (the latter is even cryptically phrased as "I have places to go" instead of "No, I want to go home") seems to indicate that whatever Frisk's pre-Underground situation was, they're considering leaving it behind completely, which doesn't paint a picture of a home life of sunshine and light.
Speaking of, an overwhelming number of post-True Pacifist fanworks also have Frisk choosing to stay with Toriel and getting officially adopted by her, so that Goatmom has a family again and Frisk can stay close to their monster friends.
While the player can go any route, Frisk is most often characterized as a fundamentally good-natured kid with deep affection for all their monster friends, even Flowey at the end of True Pacifist, and any violence they do is blamed on either the Fallen Child or more often now, the player themself, compelling Frisk to fight against their will. This is probably because Frisk's name is only revealed on a True Pacifist run, the run requiring the player character go out of their way to not kill any monsters at all and to make friends with the main cast. Other recurring bits of characterization include Frisk being a big flirt (since the option keeps cropping up and they do "date" two of their friends - plus, Rule of Funny) even if they don't really mean anything by it, and being a smiley Cheerful Child despite their character sprite's unchanging lack of expression (though in a pacifist judgement, Sans does say that even when Frisk runs from fights, they do it with a smile, which he may or may not mean literally).

The Human SOULs

There have been quite a few works which portray the six other human SOULs as children just like the protagonist and the Fallen Child, even though the game doesn't provide any concrete indication as to any of their ages. There is evidence this could be correct, however; Toriel's house does have toys and kids' shoes of various sizes, which supports the theory, and Toby also referred to several children falling into the monsters' realm in an interview before the game came out.
The six previous humans have varying thoughts on what they should act like, but the Dark Blue/Indigo SOUL is generally portrayed as being extremely violent, verging on No Mercy run levels of murderous due to their lost possessions, which are said to be covered in dust, which people frequently take to specifically mean the corpses of one or more monsters.
The yellow SOUL died in a stand-off with Undyne, but managed to take out her eye before biting the dust.
- This has since been overshadowed by the extremely popular interpretation of the Yellow SOUL in the fangame Undertale Yellow, which has eclipsed most other fanon interpretations of the character.
In fanart, it's common to draw the cyan SOUL as a cute little girl with a hair ribbon, the orange SOUL as a rough and scrappy young boy (or more rarely a tomboyish girl), the blue SOUL as a ballerina with a Prim and Proper Bun, the purple SOUL as a short, nerdy kid wearing glasses, the green SOUL as a kindhearted cook, and the yellow SOUL as a gunslinging cowboy (or cowgirl).
- They're also usually made into a Gender-Equal Ensemble with the orange, yellow, and purple SOULs being boys and the blue, cyan, and green SOULs being girls (or with the green SOUL being a boy and the purple SOUL being a girl).
- The children are often drawn wearing striped shirts, clothing matching the color of their SOULs, or striped shirts in the color of their SOULs. Sometimes this extends to drawing the blue SOUL with a blue tutu, even though it's pink in its overworld sprite (although some artists compromise by drawing them with a pink tutu and blue leotard).
- The SOULs often aid Asgore if he has a battle in the Genocide route.

Napstablook and their cousins

We never do see what Napstablook's cousin looked like before becoming Mettaton, but most fanart depicts them as a little pink or lavender ghost with long hair covering one of their eyes, much like Mettaton EX. Likewise, the Mad Dummy's ghost is assumed to be yellow or orange like them, and the Ruins Dummy is assumed to be a green ghost with a missing eye. After the Nintendo Switch port introduced Mad Dummy's new (and preferred) form, Mad Mew Mew, it became more common to depict Mad Dummy's ghost as pink with eyelashes, sometimes including cat ear-like protrusions to match Mad Mew Mew's appearance.
Similarly, we never do learn Napstablook's cousin's name before he became Mettaton. A large majority has settled on their name being "Hapstablook" due to Papyrus dubbing them as such. ^{Note (spoilers)}
Despite Napstablook's overworld sprite depicting them as taller than Frisk, Sans, and quite a number of other characters, fanart will frequently depict them being the size of a plushie.
Some fans wonder how Napstablook would look like if they became corporeal: the fact that, as a ghost, they're gender-neutral, only leaves more room to the imagination.

The Fallen Child

In the fandom, The Fallen Child is almost universally drawn with red eyes, regardless of whether Chara is being portrayed as evil or not. This might be because of the SOULless Pacifist Ending, where they pull an Eye Awaken with glowing red eyes. When they appear in the Genocide ending, they have eyes the same color as their hair, which could be described as reddish brown, but probably not the deep, vivid red often shown.^note
Their gender:
- In contrast to the protagonist's gender which is often left completely open-ended, fandom does tend a little toward interpreting the Fallen as female. A few factors in this are the rosy cheeks on Chara's sprite (which can be gender-neutral but are often associated with femininity) which makes many artists depict "her" as Cute and Psycho, and the very name "Chara" being indicated as the proper name for the Fallen and vowel-ending names in English, the game's native language, usually being feminine. On top of that, "χαρά" (which can be transcribed into "chará" or "khará"), in Greek, usually being feminine when used as a name, means "joy", "beloved", or "delight".
- There is still tons of room for a male Chara in fandom, though, especially given Toby Fox's indication that you can use your own name for the Fallen (if you can't think of anything else), suggesting that the Fallen's gender should perhaps match the player's own. The main argument towards this interpretation is that Asriel and Chara shared the same room, a fact that doesn't seem too problematic for same gender siblings, but which seems to be more taboo when they are of the opposite sex.
- As with Frisk, another very popular interpretation of the Fallen is that they're non -binary. Frisk has just fallen into the Underground and no one even knows their name until the end of True Pacifist, so it could well be that no one knows their gender, but the monsters did get to know Chara and their family refers to Chara with gender-neutral pronouns. While it could be argued that Chara is gender-neutral because they're meant to be whatever gender the player decides and is referred to with gender-neutral pronouns to avoid confusion later in the game with whatever name you gave them, supporters of the idea of a non-binary Chara argue that the game affords you the chance to name Chara what you wish, but at the same time does not let you pick their gender despite how simple this would be to program in a choice about gender at the same time if they were truly meant to be whatever gender the player preferred.
In a similar vein to Frisk, they are often represented wearing shorts despite their sprite being a Palette Swap of them, official art showing them wearing pants as well as the intro cutscene.
The First Child's real name being Chara. Officially they have no canon name for the reasons given above, but the game has a special response if you use it, the launch trailer using the name, and the in-game files refer to the character as such, causing many to consider it as good as canon at this point.
In some lighter-hearted stories with The Fallen Child/Chara and Frisk (either be it share mind or somehow separate, like Chara being a ghost only Frisk can see), they're generally shown as something of a Jerkass in words alone, and otherwise harmless.
Chara is very commonly depicted in fanworks as a victim of prolonged abuse while they were alive and before they fell into the underground by those who don't believe they are evil and want to tie their unspecified "not happy reasons" for climbing Mt. Ebott to their hatred of humanity. This goes hand-in-hand with the belief that their reason for climbing Mt. Ebott was that they were Driven to Suicide. Adding to this, and connecting it to the above headcanon that their eyes are red, their eye color is often portrayed by defenders as one of the things the humans in the surface abused them for, like here.
Virtually everything about the nature of the Fallen Child's purpose in-game.
- One of the most popular theories, by far is that the Fallen Child is the one who begins moving Frisk during the cutscenes in the Genocide route.
- Another big idea that's risen recently is that The Fallen Child is the narrator in all routes, not just Genocide.
- In addition, in part because of their name in promotional materials which is derived from "character" and "truechara" internally, it's been speculated that Chara is the actual player character, and is either controlling Frisk throughout the game or sharing control with them as they did with Asriel. Suffice to say that the Fallen Child is one of the most important and least well understood characters in Undertale, and that speculation about their role is unlikely to reach a conclusion at any point in the near future. Toby Fox certainly isn't providing any clear answers.
A recurring bit in fanworks with a malicious Fallen Child facing Sans down in Genocide is having them tauntingly calling him "comedian". The would-be nickname originated from early confusion over who the Fallen meant when they mention "that comedian" at the Snowdin save point (it's supposed to be Snowdrake, because you have to trigger his encounter and kill him before the kill counter in Snowdin runs out, but some fans took it to mean that the Fallen brooding over Sans).
The Fallen Child's Trademark Favorite Food in fanworks is chocolate and they're depicted as being so obsessed with the stuff that they'll go for it at any opportunity, complete with jokes about not having chocolate somehow triggering violence from the Fallen (or getting chocolate stopping violence from the Fallen). In canon, they only ask about chocolate once, when inspecting Asgore's fridge in Genocide, and don't react at all to the chocolate bar in Toriel's fridge. Then again, considering the by now single-minded, power-hungry Fallen is even taking the time to stop and grumble about not finding chocolate near the end of the otherwise extremely bleak and dead-serious Genocide, maybe fans have a point.
Since the Fallen Child had the same color SOUL as Frisk and Frisk's defining trait is thought to be their determination, Chara's main SOUL trait is commonly assumed to have been determination too.
Some fans came up with the idea that their birthday is September 9th, due to their seeming obsession with 9s, as seen when they destroy the world.

Mettaton

Fan depictions of Mettaton often portray him as someone who Really Gets Around. While he's a vain Mr. Fanservice who banks a lot of his popularity on his good looks, the game never makes any indication of his sexual or romantic inclinations.
Mettaton is not exactly the greatest boss to Burgerpants, but a sizable portion of the fandom likes to portray him with an "I will bully you- but if anyone else bullies you, they get hit" mentality.
Mettaton's subject to something similar to Papyrus, not only in personality, but in looks. On the latter, in the game, he's beautiful in the way David Bowie was. To the fans, he's beautiful in a way a woman is. Likewise, on the former, fans sometimes downplay or nix his cutthroat edge and cocky attitude and bend his theatrics and flamboyancy for less of a "gender-bending showman" demeanor and more of a Sassy Gay Friend one.

Shopkeepers

Burgerpants, to many fans, seems to usually be depicted with a slight Southern US/Texas drawl, and usually smoking a cigarette, sometimes to the point of chain-smoking (despite only one of his expressions featuring a cigarette).
It's not uncommon to see fans depicting the flame girl in a Sailor Fuku (who is sometimes simply called "Fuku") as either Grillby's daughter or at the very least related to him somehow.
Pretty much any full-body depiction of the shopkeepers (with the exception of Gerson, whose full body is seen on his tarot card,) since their sprites are only seen from the waist up.

Asriel

Asriel almost in his entirety ends up being this, as a result of being a One-Scene Wonder. From the little we see of him, we know he's generally lovable, innocent, and childlike, though acceptably adult considering all he's been through over his existence. On the other hand, (perhaps purely to emphasize Chara's mean-spirited nature from artists who believe in that interpretation), a lot of fanart tends to depict him as an incredibly cowardly, naive crybaby prone to fleeing, hiding, or crying at the first sign of conflict, not unlike Lucas at the start of Mother 3. Granted, much of this particular fanart is set before Asriel and Chara's collective deaths, though from what we hear ingame, Asriel was surprisingly adult even during those years and was reluctant at worst when facing hard situations. When this isn't the case, Asriel as a child is usually at the very least depicted as far more naive and gullible than is implied ingame. As a saving grace, much if not all of these cases tend to be for the sake of emphasizing Asriel being adorable rather than putting him down in any way.
All we know is that Monsters that take Human SOULS are 'horrible beasts with unfathomable power' and 'look very unsettling'. But it's generally assumed that Asriel's "Absolute GOD of Hyperdeath" form is also the form that he took after absorbing Chara's SOUL.

Asgore and Toriel

Asgore in the game, is a Gentle Giant who, while he does miss his family deeply and wants another chance, understands why Toriel left and hates him. Some fans, however, see him as a full-blown yandere to Toriel, doing anything and everything he can to drag her back to him.
Despite her very modest sprites in-game, most artwork and fictional descriptions of Toriel depict her as having a very full, voluptuous figure, typically sporting very large breasts and wide hips. While this is no doubt a result of the common sexualization of fictional characters, it's also likely the result of Toriel's motherly nature, as full-figured or voluptuous figures are commonly associated with matronly archetypes.
Toriel's clearly not on good terms with Asgore by the time they reunite within the game, but the epilogue does have hints that they may, in time, mend their relationship. Not so according to some fans, who portray her going into a bloodthirsty rage at the mere sight of him.
In the True Pacifist ending, Asgore continues his track record of being a Giver of Lame Names and names the monsters' aboveground settlement "Newer Home" or "New New Home".
When fanartists draw the characters with visible eye colors, Asgore often has one blue and one orange eye, due to how his eyes flash in his battle.

Muffet

Muffet's design invites plenty of this due to having relatively few official artwork or merchandise yet still being extremely popular:
- Like Papyrus, many fan artists depict her arms as dark purple, possibly wearing long gloves, due to their color on her overworld sprite. In her battle sprite, they're the same color as her face, which is periwinkle on the overworld. (It should be noted that her hands are also colored periwinkle on that sprite.)
- On the flip side, her Cute Little Fangs are sometimes colored black as a result of her battle sprite coloring them that way, even though it's likely this is just for visibility purposes.
- The front of Muffet's dress is, according to Michelle Czajkowski's original concept artwork, supposed to consist of a collar and two sleeves from which her lower four arms extend. Due to the ambiguity of her sprite artwork, a lot of fan art shows these as being either one large ribbon (with the arms simply poking out from the side of the dress), or a small ribbon with sleeves and no collar. Even more faithful art often adds a ribbon to the front of her dress.

Fanon / Undertale

Sans, Papyrus and W. D. Gaster

Flowey

Frisk

The Human SOULs

Napstablook and their cousins

The Fallen Child

Mettaton

Shopkeepers

Asriel

Asgore and Toriel

Muffet

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Fanon / Undertale

Edit Locked

Sans, Papyrus and W. D. Gaster

Flowey

Frisk

The Human SOULs

Napstablook and their cousins

The Fallen Child

Mettaton

Shopkeepers

Asriel

Asgore and Toriel

Muffet

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