Underfell

Created by FNaFSpriteMaker

**Underfell** is an AU of the well-known role-playing video game *Undertale* where all of the good-natured monsters who don't actually want to hurt the protagonist, are replaced by vicious versions with opposite intentions and vice versa. One prime example of this is Flowey, who, normally shown as being an antagonist in Undertale, actually wants to help the protagonist escape the Underground safely. It presents a universe where the Underground monsters are darker versions of their originals. Some fans refer to these characters with 'Nega' but must refer the characters as 'Fell' as a prefix to differentiate from canon.

There are many interpretations of this universe, but most share similarities such as Frisk falling from Mt. Ebott and meeting Flowey, who isn't evil but rather a guide through the Ruins, and instead, King Asgore is the one that has instated the motto "Kill or be killed" and the one who poisoned Chara rather than themselves.

Underfell was foremost created as a design aesthetic, so there originally wasn't a canon backstory to the characters outside of the idea that they are an alternative, evil version of the regular Undertale canon characters. However, there are some various ideas about the characters that are widely accepted, such as Sans getting easily flustered and irritated by flirting, puns, and having an obsession with mustard or Papyrus being a cold individual with no patience for failure (especially not from his brother). Later on when the creator of Underfell returned actual canon personalities got created.

All of the monsters are essentially malicious/more violent than in Undertale. They attack one another and don't all appreciate the fact that Frisk is befriending them. Instead of promising to protect the human, Sans is dared to kill them. Instead of the wide arrange or friendly colors, most characters tend to share a fashion of black, red, and gold, with red also being the color often used for battle sprites. Flowey and Mad (Sad) Dummy are pretty much the nicest characters/only nice characters (and some of the only monsters without black, red and/or gold in their character design). Monsters weren't always this way however, their evil nature is caused by the downward spiral the Underground got into.

Even though the creator returned to the community, the AU still remains community-shared however as they have gone on to continuously state they are in full support of all non-problematic takes and interpretations, very much enjoying them and asking fans not to send hate to AU takes and designs just for going outside Fella's personal interpretations.

## Characters

### Frisk

Frisk, together with Flowey, is a Pacifist-Run character in a world of Genocide-Run based monsters, trying to befriend the characters who are trying to kill them and refusing to stop trying to make everyone like them. While in most depictions of this AU they can be seen wearing a black shirt with a red stripe, they canonically wear a blue shirt with pink and black stripes.

### Flowey

Flowey is Frisk's companion. It is confirmed that Flowey likes singing, but sometimes he gets carried away and gets too loud at the worst times. Flowey fears every other monster. Even though he’s been beat to the ground and nearing death, he’s always optimistic as he cheers frisk on. There's also probably a box cutter in his pot

### Toriel

Toriel makes meat pies instead of baking due to being bad at it., before her children died, she cared for her family but was afraid of Asgore's hatred of humans so she took care of Chara with her husband's knowledge when she found out that Asgore poisoned Chara, she ran away to the Ruins where she lost her sanity. Toriel also has a very colorful rose garden, never manages to NOT get her top torn apart from going in to water/cut them.

### Sans

Sand strives to be the cool and collect brother of Papyrus. Sans can also be sarcastic as well. Sans calls Papyrus any variation of the word boss but in a very stupid way. Instead of saying "You're gonna have a bad time", Fell!Sans instead says "I'm going to have ONE HELL OF A TIME!!!". He makes and sells chimichangas rather than hotdogs. Sans got his jacket from Grillby when he actually got him to laugh, even though it was unintentional.

Sans's red eye shows to reflect how “corrupt” (mainly emotionally hopeless) he’s gotten, so when it flickers, it would be yellow and orange. Sans plays the trumpet instead of a trombone.  Sans holds in a lot of emotional stress, so he’s constantly radiating his powers, which mostly affects his jacket fur. Sans is technically one of the most powerful monsters, but with the consequence of hurting himself the most.

### Papyrus

Instead of spaghetti, Papyrus will cook lasagna, and instead of laughing "Nyeh heh heh," Papyrus doesn’t really laugh. Instead, he snorts or says “MWAH HAW HAW HAW”. He also “hmph”s as well. He is also a great cook, therefore his lasagna is very good. Papyrus would try to kill frisk with a many layered cheese lasagna that is both delicious and gruesomely bad for them. Papyrus actually is one of the monsters who would have any remorse of killing someone. Papyrus also has a huge responsibility being in the royal guard, in which he takes very seriously, especially considering that he's only in it to protect his own brother. He presents himself like him killing is for “sport” to be menacing so he could be on everyone else’s good side. However, this doesn't mean he actually likes doing it. He knows that the huge weight he carries isn’t from his armor, but from his guilt.

He also loves evil puns. However, if you tell him a joke that isn’t evil, he will not understand it. Papyrus also tries to be the cool and collect brother. He’s actually almost matched with Undyne’s strength. He also gloats a lot, for absolutely no reason, if he’s being decent expect a humble brag. Papyrus can be obliviously considerate at times and can be awkwardly supportive.

Absolutely no one knows how he has so much leg. His boots were given to him from Alphys, which makes him even more insanely tall He’s presumably the third tallest of the main monsters. His the wrestle mania belt was made by himself after he beat Undyne in sparring.

Sans and Papyrus's relationship does have some fighting, but not in a very violent way. Papyrus is not abusive towards Sans instead he cares for Sans alot, he actually wants to help him but Sans continuously makes excuses not to accept it which annoys him In fact the only reason he even joined the royal guard was to protect Sans from Asgore.

### Grillby

Grillby is green with purple hues within while working, and purple when he is off work. He’s not mean, He just doesn’t care about what goes on and will show he doesn’t. Grillby is also more stoic and serious. However, if you can crack a chuckle out of him, he’ll give you a smaller version of his own jacket.

### Undyne and Alphys

Undyne and Alphys are already in the process of dating by the time of the human's arrival.

### Mettaton

Mettaton is often seen having four arms in his box form, but canonically he only has two arms in his box form. He always has a smile on his face.

### Muffet

Muffet is often depicted wearing red and black clothes, however she actually wears black and purple clothes.

### Burgerpants

Burgerpants absolutely hates his job and doesn't even care about it. You could steal everything in the store and all he’d say is “Oh nooo, don’t do that” while his eyes are glued to a magazine.
He only cares about your presence as a customer if you leave him a pretty generous tip. However, If you steal the tip jar, he will murder you.

### Asgore

Asgore poisoned Chara because he thinks that all humans are evil. He is also the one responsible for making Papyrus's scar. There was also a time where Asgore wanted to crush Sans's head for insulting him.

### Asriel

Asriel is very similar to his Undertale counterpart but more rude (accidental or not), at first he was distanced himself from Chara until seeing how kind they were to him, He still goes to the surface but for different reasons to place Chara of the flowers of their home after being poisoned by Asgore but still meets the same fate as his Undertale counterpart.

### Chara

Chara is very sweet and puts monsters before themselves, they don't hate nor like humanity since they knew what the humans did was wrong but is hopeful of monsters and humans living together.

### Fella

Annoying Dog is replaced by a white dog dressed as a black cat, which is the representation of Vic the Underfella.

### Chrome

Chrome (Full name: Monochrome ) is a secret boss and is the graveyard shift bar tender that cares about his boss a lot. Not much is known about him at the moment.  Chrome is a very shy and reserved guy who has grey skin. He was actually inspired by Template:W and "Cream on Chrome" by Ratatat. Chrome uses like every color of the rainbow in the fight. He also has a move called DISARRAY, where he screeches and the sound waves that come from it are a random combination of white and blue.

## Miscellaneous

* There is no Genocide, Neutral, or Pacifist Routes. Instead there are routes, such as the **Trust Route** (Where Frisk and Flowey manages to Befriend all the Monsters, and monsters now begin to trust each other and the barrier is destroyed), *Closure Route* (Where Frisk manages to befriend all of the monsters and manages to make them realize the wrongs they have committed, finally finding closure within each other), and the **Betrayal Route** (Where Flowey pins all the monsters against each other resulting in Frisk getting blamed by the monsters).
* In the Closure and Trust Route, the monsters do manage to destroy the barrier.
* Asgore is confirmed as a true villain in this AU.\*The routes for this AU are the Trust, Betrayal, and Closure routes.

## Story

* Sans and Papyrus's backstory
* Gaster
* Strollin'
* Ballin'
* Stylin'

## Trivia

* Vic The Underfella and Sour-Apple Studios (who is the creator of Horrortale) are fans or each other's AUs.
* The reason why the creator had left for a while was that they had so much going in my life, which stresses them out at the time.
	+ Other reasons was due to that there were too many edgelords harassing anyone who enjoyed the AU and an outbreak of NSFW that everyone directed their attention to instead of what the AU was supposed to be, which they decided to shut it down for everyone’s own good at the time.
* Sans's design is based on Hamsatron's fanart of Raymond from Animal Crossing.
* Though some fans believe Underfell to be the first Undertale AU created, Kindred Spirits was actually the first AU.
* Toriel was the first character created for this AU.

* Underfell was inspired by the scene playing out when you betrayal kill Toriel in Undertale.
* Underfell was originally supposed to be named "Underhell", but was scrapped due to something already being tagged as such that had nothing to do with Undertale.
* The AU's creator made the fanon designs from Omega Flowey and Temmie as canon, since in his words, "the designs are already perfect".
* When asked about proposed battle sprites, the AU's creator said: "Both can work, when frisk first battles them they’re the color their design is most associated to and once you beat them their sprite turns gray. You get to see some important design details when they fight, after you beat em they are now gray, calm, and tired. so... why not both!" Albeit they prefer a darker tone of red, with more color focus over fanon's much brighter red tones.
* The monsters, especially Toriel and Papyrus, don't hold back, making the battles in this AU much harder.
* Only 9 character designs were revealed before the Underfell blog shut down, and no new designs were revealed. However, Underfell's creator has since revealed designs for other characters on their new blog; including the likes of Frisk, Asriel, Napstablook, and Muffet.
* Underfell's character designs reminds Underfell's creator of McDonald's, as they both use a similar color scheme. Because of this, Underfell's creator has imagined Sans working at McDonald's, which they've drawn.
* It's possible that all of the dogs in Undertale become cats in Underfell, so it's harder to spare them.
* Underfell's blog was managed by several people, not just one person. A few mods were minors.
* Underfell was attacked by some people for "ruining the game" right after its creation.
* The creator says that Chara will say this when Frisk meets them: .
* What inspired the creator to create Underfell because they are interested in villains and love things that are about villains.
* Everyone in the cast can say the "f-word."
* Mettaton has the tallest heels of the cast.
	+ However, It was also mentioned that Asgore is "the tallest and baddest of them all."
	+ It is also mentioned that Papyrus is possibly the third tallest of the cast as well.
* Sans always had a gold tooth within this AU.  How he got it is because he wanted one.
* It is confirmed that Asgore is worse than the Spade King.
* Mad dummy would be Sad dummy in this AU.
* Papyrus has an ugly pretentious laugh, so yes he "HAWS" rather than "NYEHS". Papyrus also hates when anyone makes him laugh, because he knows his laugh is ugly. Even Sans and Undyne know about about this.
* Vic The Underfella has confirmed that Papyrus' voice would sound like the pitched down remix of the Skelebros Song by JT Machinima.
* The smoke Sans lets out of his mouth is actually a a smoke-like substance as an equivalent of “blowing off some steam” like in the cartoons where characters gets red in the face and steam/smoke blows out of their ears.
* In the Betrayal Route, Frisk refuses to kill any monsters, however Flowey eventually would start offering to help them and do a final blow to monsters.
	+ Flowey uses the box cutter in his pot, it’s not enough to hurt monsters throughout a fight but it is enough to finish them.
* Sans sells Chimichangas instead of hotdogs/hotcats.

## Gallery

Frisk, Flowey, and Toriel's official artwork - Created by Vic the UnderfellaToriel, AU's First Image (DEC 11 2015) - Created by Vic the UnderfellaEarly Toriel Artwork (2015) - Created by Vic the UnderfellaEarly Toriel Artwork (2015) - Created by Vic the UnderfellaEarly Toriel Artwork (2015) - Created by Vic the UnderfellaEarly Toriel Artwork (2015) - Created by Vic the UnderfellaEarly Toriel Artwork (2015) - Created by Vic the UnderfellaPapyrus and Sans's old designs official artwork - Created by Vic the UnderfellaSans and Papyrus's official artwork - Created by Vic the UnderfellaGrillby's official artwork - Created by Vic the UnderfellaAlphys and Undyne's official artwork - Created by Vic the UnderfellaAlphys and Undyne date clothes official artwork - Created by Vic the UnderfellaEarly Mettaton EX and Alphys Artwork - Created by Vic the UnderfellaMettaton's official artwork - Created by Vic the UnderfellaNapstablook's Official design - Created by Vic the UnderfellaNapstablook's Official design (digital) - Created by Vic the UnderfellaMuffet's Official artwork - Created by Vic the UnderfellaSad Mew Mew's official artwork - Created by Vic the UnderfellaGrillby's official artwork - Created by Vic the UnderfellaBurgerpants Official design - Created by Vic the UnderfellaEarly Gaster Artwork - Created by Vic the UnderfellaMuffet's Official artwork - Created by Vic the UnderfellaSad Mew Mew's official artwork - Created by Vic the UnderfellaEarly Asgore Artwork - Created by Vic the UnderfellaAsgore's official artwork - Created by Vic the UnderfellaChara and Asriel's Official designs - Created by Vic the UnderfellaChara and Asriel's Official designs (digital) - Created by Vic the UnderfellaNice Cream Guy Official design - Created by Vic the UnderfellaGaster's official design - Created by Vic the UnderfellaGaster from the past Official design - Created by Vic the UnderfellaSans and Alphys from the past Official design - Created by Vic the UnderfellaGod of Hyperdeath Official design - Created by Vic the UnderfellaGaster Blasters Official design - Created by Vic the UnderfellaTemmie's canonized artwork - Created by SporesgalaxyOmega Flowey's canonized artwork - Created by xHopelUF's secret boss, Chrome (1st design)- Created by Vic the UnderfellaChrome (2nd design)- Created by Vic the UnderfellaChrome (3rd design) - Created by Vic the UnderfellaNice Cream Guy, Burgerpants, and Chrome - Created by Vic the UnderfellaChrome sketches - Created by Vic the UnderfellaMore Chrome sketches - Created by Vic the UnderfellaPanicked Chrome - Created by Vic the UnderfellaMore Nice Cream Guy, Burgerpants, and Chrome - Created by Vic the UnderfellaFella grabbing Chrome at his head - Created by Vic the UnderfellaUnderfell Birthday Bash featuring Papyrus, Frisk, and Fella - Created by VicTheUnderfellaUnderfell birthday bash featuring Toriel, Sans, and Asgore #2 - Created by VicTheUnderfella6 Years of Underfell featuring Frisk, Flowey, Undyne, and Alphys - Created by VicTheUnderfellaCreated by VicTheUnderfellaSans letting out a smoke-like substance in battle - Created by Vic The UnderfellaToriel Artwork redesign - Created by Vic The Underfella
## References

1. ↑ October 16, 2015/Original posting
2. ↑ FAQ Underfell blog
3. ↑ https://underfell.tumblr.com/post/185264510156/what-is-gaster-like-in-this-au-if-you-dont-mind
4. ↑ https://underfell.tumblr.com/post/618197110014328832/what-are-your-thoughts-on-rynoggs-take-on
5. ↑ https://underfell.tumblr.com/post/184113502076/seeing-as-this-blog-is-hopefully-v-becoming
6. ↑ https://underfell.tumblr.com/post/184113967516/also
7. ↑ https://underfell.tumblr.com/tagged/uffrisk Bio on Frisk
8. ↑ https://underfell.tumblr.com/post/618529107145375744/does-flowey-like-singing
9. ↑ https://underfell.tumblr.com/tagged/ufflowey Bio on Flowey
10. ↑ https://underfell.tumblr.com/post/162622843291/whats-the-info-on-uftoriel-o-theres-so-much
11. ↑ https://underfell.tumblr.com/tagged/uftoriel Bio on Toriel
12. ↑ https://underfell.tumblr.com/post/185334214951/if-were-gonna-say-sans-refers-to-papyrus
13. ↑ https://underfell.tumblr.com/post/185949100506/i-needed-to-get-this-out-before-my-hand-fully
14. ↑ https://underfell.tumblr.com/post/685059433571794944/what-did-underfell-sans-sells-instead-of-hot-dogs
15. ↑ https://underfell.tumblr.com/post/187195149586/did-sans-get-grillby-to-laughsmile-and-earned-his
16. ↑ https://underfell.tumblr.com/post/189812801461/does-sanss-eye-turn-the-classic-colors-when
17. ↑ https://underfell.tumblr.com/post/655541860470833152/what-instrument-would-you-say-uf-sans-plays What does Sans play in Underfell?
18. ↑ https://underfell.tumblr.com/post/189806916921/its-ya-boyzzzz-revamped-redone-finalized-fun Bio about Sans
19. ↑ https://underfell.tumblr.com/post/189806916921/its-ya-boyzzzz-revamped-redone-finalized-fun
20. ↑ https://underfell.tumblr.com/post/187807885116/oh-man-it-took-me-ages-to-finally-realize-it-for
21. ↑ https://underfell.tumblr.com/post/187295395936/is-papyrus-liking-lasagna-canon-in-the-uf-au-or
22. ↑ Papyrus has remorse
23. ↑ https://underfell.tumblr.com/post/184182369551/since-this-blog-is-starting-to-take-back-traction
24. ↑ https://underfell.tumblr.com/post/189829211671
25. ↑ https://underfell.tumblr.com/post/184182369551/since-this-blog-is-starting-to-take-back-traction
26. ↑ https://underfell.tumblr.com/post/185347151896/uf-grillby-im-not-gonna-lie-and-say-i-had-the Info about Grillby
27. ↑ https://underfell.tumblr.com/post/663183947156652032/being-accidentally-funny-has-its-rewards Example of what happens if you make Grillby chuckle
28. ↑ https://underfell.tumblr.com/post/184204703166/can-you-believe-it-fun-facts-under-read
29. ↑ https://underfell.tumblr.com/post/185398325246/the-man-the-myth-the-legend-mettaton-instead
30. ↑ Trivia about Burgerpants
31. ↑ https://underfell.tumblr.com/post/187301427306/cant-draw-on-cpu-yet-so-heres-a-brief
32. ↑ https://underfell.tumblr.com/post/617806364918595584/i-call-this-the-last-push-i-am-just-spinning
33. ↑ https://underfell.tumblr.com/post/617807690892214272/what-did-sans-dosay-to-make-asgore-so-angry
34. ↑ 34.0 34.1 https://underfell.tumblr.com/post/187301427306/cant-draw-on-cpu-yet-so-heres-a-brief
35. ↑ https://underfell.tumblr.com/post/185276072656/do-you-have-like-a-dog-oc-like-toby-is-being
36. ↑ https://underfell.tumblr.com/post/664071815200735233/is-chrome-inspired-by-the-troll-species-from Some info about UF's secret boss
37. ↑ https://underfell.tumblr.com/post/663189719874748416/also-finally-caved-and-made-a-secret-boss-oc-for UF secret boss
38. ↑ https://underfell.tumblr.com/post/664903319147397120/whats-the-boss-fight-against-chrome-like Chrome fight
39. ↑ https://underfell.tumblr.com/post/651913101407584256/embed
40. ↑ https://underfell.tumblr.com/post/651963560389378049/betrayal-fight-concept
41. ↑ https://underfell.tumblr.com/post/665613001988145152/a-note-real-quick-about-betrayal-route-busy-atm
42. ↑ https://underfell.tumblr.com/post/652221672606384128/more-more-more
43. ↑ https://underfell.tumblr.com/post/652050092213370880/battle-against-a-true-rival
44. ↑ https://underfell.tumblr.com/post/651913101407584256/these-are-just-thoughts-and-im-spewing-ideas-i
45. ↑ https://underfell.tumblr.com/post/652101473010958336/does-the-monster-race-get-freed-from-the
46. ↑ https://underfell.tumblr.com/post/187322830771/whoa-so-you-mean-to-tell-me-asgore-is-the-cockhole
47. ↑ https://underfell.tumblr.com/post/651913101407584256/these-are-just-thoughts-and-im-spewing-ideas-i Evidence of the Trust, Betrayal, and Closure Routes.
48. ↑ https://underfell.tumblr.com/post/654639226123616256/this-like-a-year-old-but-now-that-im-aware-both Confirmed
49. ↑ https://underfell.tumblr.com/FAQ
50. ↑ https://underfell.tumblr.com/post/618142808783634432/so-yeah-based-off-of-this-design-my-only
51. ↑ https://docs.google.com/document/d/1DhzMzPNJ7jG1qv163OSKrnSc1jEawkFO2E0q9S7hNlA/edit?usp=sharing
52. ↑ https://underfell.tumblr.com/post/162622967536/fun-fact-1
53. ↑ https://underfell.tumblr.com/post/162622967536/fun-fact-1
54. ↑ https://underfell.tumblr.com/post/689625288239448064/you-really-are-no-different-than-them As stated in the tag
55. ↑ https://underfell.tumblr.com/post/184118810891/tbt-spam03-the-last-image-is-the-very-first-take
56. ↑ https://underfell.tumblr.com/post/185354748096/fanon-canon
57. ↑ https://underfell.tumblr.com/post/617841409598406656/uh-im-not-sure-if-you-have-been-asked-this
58. ↑ https://web.archive.org/web/20151031150748/http://underfell.tumblr.com:80/post/131382518851/are-monsters-in-this-au-made-out-of-different
59. ↑ https://underfell.tumblr.com/post/177983020856/is-there-a-chance-that-we-can-get-at-least-some
60. ↑ https://web.archive.org/web/20151101030750/http://underfell.tumblr.com:80/post/131510195456/tbh-i-love-the-designs-for-the-au-and-redesigning
61. ↑ https://web.archive.org/web/20151107174743/http://underfell.tumblr.com:80/page/2]
62. ↑ https://web.archive.org/web/20151028010935/http://underfell.tumblr.com:80/who
63. ↑ https://web.archive.org/web/20151021234951/http://underfell.tumblr.com:80/about
64. ↑ https://web.archive.org/web/20151022230616/http://underfell.tumblr.com:80/post/131432269866/i-like-this-idea-a-lot-but-im-so-confused-because
65. ↑ https://underfell.tumblr.com/post/637869684628340736/what-does-chara-say-when-frisk-meet-them
66. ↑ https://underfell.tumblr.com/post/641988090660028416/does-anyone-in-the-cast-say-the-fuck-word
67. ↑ https://underfell.tumblr.com/post/189813032521/but-who-has-the-t-a-l-l-e-s-t-heels
68. ↑ https://underfell.tumblr.com/post/189812767406/he-is-the-only-other-main-monster-without-heels
69. ↑ https://underfell.tumblr.com/post/189806916921/its-ya-boyzzzz-revamped-redone-finalized-fun
70. ↑ https://underfell.tumblr.com/post/188006246786/the-ut-sans-you-drew-actually-looks-like-uf-sans
71. ↑ https://underfell.tumblr.com/post/187422546751/how-did-sans-lose-his-tooth
72. ↑ https://underfell.tumblr.com/post/187323153741/so-who-is-worse-spade-king-or-underfellasgore
73. ↑ https://underfell.tumblr.com/post/653132599466835968/is-the-dummy-still-mad Is the Dummy still mad?
74. ↑ https://underfell.tumblr.com/post/185869661356/so-based-upon-the-ballin-comic-papyrus Papyrus hates when people make him laugh
75. ↑ https://underfell.tumblr.com/post/185871016476/idk-if-you-already-answered-this-but-what-does Papyrus headcanon voice confirmed
76. ↑ https://underfell.tumblr.com/post/190111281271/a-question-about-sans-what-about-power-affect "Power affect the jacket fur"
77. ↑ https://underfell.tumblr.com/post/685059433571794944/what-did-underfell-sans-sells-instead-of-hot-dogs What does UF Sans sell?