Undertalexbnha Stories

20 Stories

Erring From The Path Of Heroism (UT x BNHA Crossover Rewrite) by BlazingFieryMountain
Erring From The Path Of Heroism (U...by Blazing
After his fall into the Underground, and subsequent flee from his universe, Izuku "Error" Miscalculation-Joku had erred from his dreamed path of heroism. Dust...
Rising Of Karma | BNHA x UNDERTALE by Yuur_Asteroids
Rising Of Karma | BNHA x UNDERTALEby AsterMae2
Resets and Loads later, Sans finally managed to make a difference. Only for it to come bite him in the arse once he reaches the surface. Wait... since when did he have s...
[DISCONTINUED]Heros In The Underground  by _Hoodie_Weeb_
[DISCONTINUED]Heros In The Undergr...by Hoodie Cat
DISCONTINUED A nice walk to a picnic spot can't do any harm. Just some students, taking a calming day off. Sure, there aren't any pros, but its not like they get attack...
The Boney Hero (Sans x BNHA crossover)  by DontAskImN0body
The Boney Hero (Sans x BNHA crosso...by ImN0body
At a genocide run Sans unexpectedly wins against ¿Chara? and something strange occurred, the timeline was thrown into chaos. As a result of this chaos, Sans unknowingly...
Completed
Destroyed (BNHA X Undertale FANFICTION) by Octagones
Destroyed (BNHA X Undertale FANFIC...by octagon
No ships Undertale X BNHA ------ Izuku won't become a villain , As much as I Would LOVE That I just Don't want to do it. This entire story is a TW.
Karmatic Retribution (Sans meets Bnha) by BigMits
Karmatic Retribution (Sans meets B...by BigMits
After countless resets, Multiple genocide routes. The timeline gets unstable and Sans gets teleported in an alternate universe full of heroes. Will he figure out how to...
The Deku War by IamCrossUchiha
The Deku Warby IamCrossUchiha
This will be a one shot, though I might continue this at a later date
Completed
The misplaced judge ( Undertale x bnha ) by 1Random-Person1
The misplaced judge ( Undertale x...by cringe
Sans was taken from his world and placed somewhere else due to the resets that the player has been doing. This place is "My hero academia". But San's code gli...
Personalities Galore by svwhssftr
Personalities Galoreby svwhssftr
Sans wakes up in a quirky universe. You know what, scratch that, 16 different Sanses wake up in a quirky universe. And guess what? They share one body. Chaos ensues. (T...
What if quirks appeared in real life? by TigerMHA
What if quirks appeared in real li...by Tiger
What if quirks appeared in real life? ( The world we all live in ) The story focus's on a 14-year-old kid named Ryan who is a sophomore at their high school! Hope you en...
Undertale x Bnha Crossover (Being rewritten in another book) by CheapClown
Undertale x Bnha Crossover (Being...by Cheapest of Clowns
Classic finds himself in a new place after another RESET, later on meeting up with Red. They become friends with new people and eventually meet up some familiar faces. W...
Human To Monster (Mha X Undertale) Discontinued  by Demonorio
Human To Monster (Mha X Undertale)...by Jun
Izuku is a 15 year old boy he is a UA student He have a quirk cant ONE FOR ALL (OFA for short) Izuku is exploring mount ebott because he was curious when he was a kid...
Izuku gaster by Dan6520
Izuku gasterby Dan6520
What if Izuku was the Child of frisk and sans
From Murderer to Hero - A Dusttale Frans x BNHA Fanfic [DISCONTINUED] by Turtlleee
From Murderer to Hero - A Dusttale...by Turtlleee
"can even the worst person change?" "Yes... Yes I believe they can" After saving Sans from his lust for killing and collecting LOVE, Frisk resets the...
Izuku Skeleton  by Night_-_Shard
Izuku Skeleton by King 👑
After losing hope of being a hero he did the one thing that will make everyone feel better death.After killing himself he was reborn at a place called the underground wi...
Story ideas by glitchman211
Story ideasby Glitch
Random ideas i have, you vote on which i will do
Trip to Kamino Ward by AllFOwOne
Trip to Kamino Wardby OruFoWan
This takes place when Ink and Error was transported to Kamino Ward. where All might and his Arch nemesis, All for one. Finally shows up and fight him head on in order to...
Dekuverse: Deku has a secret quirk?! by werid_fandoms
Dekuverse: Deku has a secret quirk...by werid_fandoms
What if Izuku had three quirks. What if one had to do wi the the sans au's?
Do you wanna have a bad time by theonewhoknocks1234
Do you wanna have a bad timeby theonewhoknocks1234
Read the story all i say this is a bnha xsans reader