Did You Know?
- Sans and Papyrus are named after the fonts Comic Sans and Papyrus — and their dialogue is actually displayed in those fonts in-game.
- W.D. Gaster's name combines Wing Dings and Aster, two typefaces — and his mysterious entries in the game are written in Wingdings font.
- Toriel's name is a play on 'tutorial' because she literally guides you through the game's opening area. Asgore named their children 'Asriel' (a mashup of Asgore + Toriel) and Toriel calls him terrible at naming things.
This generator produces Undertale-style names for original characters, AU versions of existing ones, fallen humans and monsters, so you can name someone who belongs in the Underground without copying a canon character. Unlike a plain fantasy generator, it can aim at one of eight character types and one of five naming styles, which is why a skeleton comes back with a typeface-flavored name and a shopkeeper with a cozy one.
Canon Undertale Names
Check your idea against these first. Roles are as listed in the character summaries linked under Sources.
| Name | Role in the game |
|---|---|
| Frisk | The silent protagonist, named in the true pacifist ending |
| Chara | The first human to fall into the Underground |
| Toriel | Boss monster and former queen who looks after you in the Ruins |
| Asgore | King of the Underground, Toriel's ex-husband |
| Asriel | Toriel and Asgore's son, later Flowey |
| Flowey | A sadistic talking flower, Asriel's reincarnation |
| Sans | Skeleton comedian; named after the Comic Sans typeface |
| Papyrus | Sans's brother, aspiring Royal Guard; named after the Papyrus typeface |
| Undyne | Captain of the Royal Guard |
| Alphys | The Royal Scientist |
| Mettaton | Robot television celebrity built by Alphys |
| Napstablook | Shy ghost who runs a snail farm and makes music |
| Gerson | Elderly shopkeeper and former hero |
| Mad Mew Mew | Possessive ghost who appears as Mad Dummy |
| W.D. Gaster | Mysterious former Royal Scientist, mostly hidden from the game |
Canon Deltarune Names
Deltarune's cast leans on cards, appliances and internet junk rather than the Underground's monsters. The same generator handles both games, but Deltarune names have their own Deltarune name generator.
| Name | Role in the game |
|---|---|
| Kris | Protagonist, an adopted human teen |
| Susie | Purple reptilian girl who wields an axe |
| Ralsei | Goat-like Dark World prince; name is an anagram of Asriel |
| Noelle | Timid reindeer-like student, Kris's childhood friend |
| Berdly | Snobbish bluebird-like student |
| Lancer | Jack of Spades miniboss who befriends the heroes |
| Rouxls Kaard | Personified rules card who speaks in botched Early Modern English |
| Jevil | Personified Joker card |
| King | Personified King of Spades, Chapter 1 final boss |
| Queen | Personified laptop, Chapter 2 final boss |
| Spamton G. Spamton | Personified spambot with a used-car-salesman act |
| Mr. Tenna | Personified CRT television and game show host |
| Lanino | Weather-themed Darkner, partner of Elnina |
| Elnina | Weather-themed Darkner, partner of Lanino |
Original Character and AU Name Samples
None of these are canon. They are the kind of output the generator is steered toward: real typefaces for skeletons, short plain names for humans, and warm food-and-craft names for shopkeepers.
| Name | Type and style |
|---|---|
| Calibri | Skeleton, font reference (real typeface) |
| Bodoni | Skeleton, font reference (real typeface) |
| Futura | Skeleton, font reference (real typeface) |
| Garamond | Skeleton, font reference (real typeface) |
| Courier | Skeleton, font reference (real typeface) |
| Gotham | Skeleton, font reference (real typeface) |
| Clover | Fallen human, simple and short |
| Merit | Fallen human, simple and short |
| Aspen | Fallen human, simple and short |
| Brynn | Fallen human, simple and short |
| Ember | Fallen human, simple and short |
| Halberd | Royal Guard, named for a weapon |
| Biscotti | Shopkeeper, food name |
| Pretzel | Shopkeeper, food name |
Naming an OC or an AU Character
For an OC, pick the character type first. A skeleton OC wants a typeface, a human wants something short enough to fit a save-file name box, and a monster wants a plain word with a second meaning. Set the generator's character type and naming style to match, then keep the results that still sound like a person after you say them aloud.
An AU is a fan-made alternate universe, so the name question is different: you usually want the base character recognizable. A reasonable approach is to keep the canon name and change what surrounds it, such as a title or an altered typeface for a skeleton, rather than inventing a whole new name that readers won't connect back.
How the Generator Constrains Output
The prompt behind this tool does three things you can predict. It asks for names of roughly four to eight characters, mirroring the short names above. It rejects epic-fantasy sounding names (it names Shadowmere and Darkthorne as examples of what not to produce) and also rejects nonsense syllables, requiring that a name have some internal logic. And each of the eight character types has its own rule: skeletons must be real font names, ghosts blend music or technology with a spectral feel, robots sound like showmen rather than weapons, and Royal Guards are earnest rather than grimdark.
Every name also comes with a short character pitch and, where the name is unusual, a pronunciation guide. Expect nothing the game itself confirms, though. A pitch's "hidden meaning" is generated, not canon.
Skip These
- Names that need more than eight letters to sound clever; canon names above are short.
- Edgy kill-words like Deathmaster. Undertale's dark names are melancholy, not violent.
- Typefaces that don't read as names. Papyrus works as a name; Times New Roman is the name Papyrus started with before it was changed (per Wikipedia), and it is clunky for a character.
Common Questions
Why are Sans and Papyrus named after fonts?
They are named after the Comic Sans and Papyrus typefaces, and their dialogue is shown in those fonts. Wikipedia also credits a webcomic about a skeleton named after Helvetica as an inspiration.
What is a good Undertale name for a human OC?
Canon humans have short, plain names: Frisk, Chara and, in Deltarune, Kris. Use the Human character type with the Simple & Sweet style to get names in that range.
Can I use this for Sans AU or other AU characters?
Yes, but it generates new names, not AU variants of existing ones. Use it for the new character, and keep the canon name for the character the AU is built around.
Sources
Updated October 2026: replaced the essay with sourced canon name tables, added OC and AU guidance, and dropped unsourced name-origin claims.
