Undertale Crossovers
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MoniTale by Joker the prince of all crime reviews
"This was never meant to happen, you should have just brought them back." Player said as he went to delete her , but then something caught his eye. The Monika lover smiled as he looked at the Heart. "Maybe you can still learn." He moved her file over to UNDERTALE and opened it's files. He was finding a spot to put her, hovering over Frisk's. Then the lightning struck them..
Crossover - Undertale & Doki Doki Literature Club - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 25 - Words: 106,855 - Reviews: 160 - Favs: 225 - Follows: 277 - Updated: 7/25 - Published: 2/21/2018
(Not) Quirk Of Judgement by maken.bialy2 reviews
Imagine a world where every person with a Quirk is equal to every Quirkless one. A world where no one has to die. A world where Heroes and Villains don't have to exist and no civilian or innocent has to be in a crossfire... Such a world can exist, But everything comes at a price...
Crossover - My Hero Academia/僕のヒーローアカデミア & Undertale - Rated: M - English - Adventure - Chapters: 20 - Words: 70,753 - Reviews: 2 - Favs: 25 - Follows: 24 - Updated: 7/23 - Published: 2/16 - [OC, Momo Y.] [Tooru H., M. Ojiro]
SOULS of Barian! by bopdog111 reviews
Sequel of "The Hope Reborn". Years after Illaster's defeat the Princeton Family seem to do unfinished business with the Anomaly, and Agate who escaped, and are facing a new threat from the Barians, and the Number cards with allies from Astral World, and Yuma Tsukumo. Co-Written with Ulrich362. SharkxOC, RioxOC, YumaxCathy
Crossover - Yu-Gi-Oh! ZEXAL & Undertale - Rated: T - English - Romance/Adventure - Chapters: 29 - Words: 203,512 - Reviews: 4 - Favs: 25 - Follows: 18 - Updated: 7/21 - Published: 9/11/2020 - Ryoga K./Shark, Rio K., OC, Frisk
Frisk Potter (rewritten ver of frisk's sercets) by Blacmage reviews
summary inside fem!harry
Crossover - Harry Potter & Undertale - Rated: K - English - Family/Hurt/Comfort - Chapters: 4 - Words: 5,418 - Reviews: 10 - Favs: 43 - Follows: 57 - Updated: 7/19 - Published: 5/18/2022
An Underground Trip by BirdWatcher2 reviews
This is a story of Percy Jackson falling into the world of Undertale sometime after the Heroes of Olympus series. He goes through the journey of the game you know, but with some twists along the way. When Sans comes face-to-face with Percy Jackson and sees his insanely high level, how will he react? And what will Percy decide? Find out if you wish.
Crossover - Percy Jackson and the Olympians & Undertale - Rated: K+ - English - Humor/Angst - Chapters: 13 - Words: 20,842 - Reviews: 4 - Favs: 30 - Follows: 37 - Updated: 7/18 - Published: 8/6/2022 - Percy J., Sans, Toriel
Hazbintale by TheShade18 reviews
Who knew dying could offer new possibilities to monsters? Or more like a second chance like humans have? Now, it sounds cool if only it wasn't for the fact that I have been transported to Hell... as a Human itself. And why is this other smiler so interested in me? Oh well, at least it's a beautiful day outside. (Cover by ArtBichon on Twitter)
Crossover - Undertale & Hazbin Hotel - Rated: M - English - Adventure - Chapters: 6 - Words: 18,660 - Reviews: 51 - Favs: 149 - Follows: 197 - Updated: 7/14 - Published: 5/7/2022 - Sans, Alastor, Charlie, Blitzo
Anomaly Between Worlds I by Danny RPG NineTwoOak
In a nutshell, a younger fictionalized version of myself got stuck in "Food Fantasy" as a dragon during the shit pandemic and has been forced to adapt to that reality ever since. That's it; that's the whole thing.
Crossover - Undertale & Food Fantasy - Rated: T - English - Parody/Adventure - Chapters: 2 - Words: 7,508 - Published: 7/13
Closed eyes by Blank-name26 reviews
"Where the fuck are we?" -A quote from Chara
Crossover - Young Justice & Undertale - Rated: M - English - Adventure - Chapters: 2 - Words: 11,458 - Reviews: 12 - Favs: 68 - Follows: 77 - Updated: 7/10 - Published: 4/10/2022 - Frisk, Chara
Cuptale (CupheadxUndertale) by Kale Bishop reviews
Mt Abott suddenly appears out of nowhere and Cuphead, dragging Mugman along, runs to the mountain to investigate. Soon they fall into the chasm and are attacked by the monsters of the underground. As they explore, they discover a tragedy that befell the underground, make friends along the way, and have a bro jolly fun adventure of a lifetime. Cover photo by me.
Crossover - Undertale & Cuphead - Rated: K+ - English - Adventure/Fantasy - Chapters: 9 - Words: 65,435 - Reviews: 5 - Favs: 26 - Follows: 23 - Updated: 6/30 - Published: 7/16/2021 - Papyrus, Sans, Cuphead, Mugman
Of Shadows and Hopes by Nadia42 reviews
Finally finding an escape from the world of Don't Starve, Wilson finds himself in a world unfamilliar from the one he knew before. He isn't alone, though, Frisk and the monsters he calls his family will be there. Somehow... Wilson P. Higgsbury knows this won't be as easy as keeping himself alive in his old prison.
Crossover - Don't Starve & Undertale - Rated: T - English - Adventure - Chapters: 44 - Words: 88,483 - Reviews: 21 - Favs: 53 - Follows: 58 - Updated: 6/28 - Published: 4/18/2017 - Maxwell/William C., Wilson H., Frisk, Chara
YellowTale by YellowCaballeroFan reviews
Ever since Toby Fox made the RPG game know as Undertale 5 years ago, many people made their own versions of it, known as AUs, or Alternate Universes. Here is my AU, which stars a most likely forgotten character from the Pokemon Adventures Manga: Yellow. This is also kind of takes place after a whole bunch of stories that expand on Yellow's character. Hope you enjoy!
Crossover - Pokémon & Undertale - Rated: T - English - Adventure/Friendship - Chapters: 32 - Words: 26,103 - Reviews: 6 - Favs: 10 - Follows: 11 - Updated: 6/26 - Published: 11/9/2020 - Yellow, Pikachu
Golden Flowers Fill My Dreams by Endralis reviews
Ruby Rose recognized that person in the tree. They certainly stood out with their disheveled hair, tattered yellow and green shirt and sharp red eyes; yet she couldn't place where she had seen them before. They also had a strange name, and coming from a family with names like theirs that was saying something. Really, who names their child Chara? What kind of color is that?
Crossover - RWBY & Undertale - Rated: T - English - Mystery/Friendship - Chapters: 6 - Words: 31,324 - Reviews: 9 - Favs: 35 - Follows: 40 - Updated: 6/25 - Published: 10/8/2022 - Ruby R., Yang X.L., Chara, Flowey
The Duelist of Determination by Ulrich362 reviews
After freeing the monsters from the Underground what's next for young Frisk? Well, there's always the world's most popular trading card game Duel Monsters. With a deck based off of her adventures it's time for the monster ambassador to show everyone what she's made of. Though with dark forces around every corner, she'll need to remember one thing, always stay determined.
Crossover - Yu-Gi-Oh & Undertale - Rated: T - English - Chapters: 18 - Words: 19,182 - Reviews: 20 - Favs: 62 - Follows: 70 - Updated: 6/22 - Published: 7/9/2017
A Blazing A Blue Eye by ZCL9822 reviews
I don't own Undertale or MHA. They are owned by Toby Fox and Kohei Horikoshi respectively. I'm rather garbage at summaries and descriptions, so I guess you'll have to read to find out.
Crossover - My Hero Academia/僕のヒーローアカデミア & Undertale - Rated: T - English - Crime/Humor - Chapters: 3 - Words: 2,218 - Reviews: 6 - Favs: 17 - Follows: 20 - Updated: 6/21 - Published: 6/15
Brave Devil Fist by Son of Nightmare reviews
Before crashing the wedding, Issei has been having dreams of another life. A life of talking skeletons and fighting monsters. He now wishes to regain his memories and help those that truly need a true king, Ravel and others. His SOUL is filled with BRAVERY. (Evil Rias and Dusttale Sans) Martial Artist Issei! Issei x Ravel x Riser's Peerage Harem
Crossover - High School DxD/ハイスクールD×D & Undertale - Rated: M - English - Adventure/Romance - Chapters: 14 - Words: 28,507 - Reviews: 21 - Favs: 141 - Follows: 172 - Updated: 6/21 - Published: 5/7/2021 - [H. Issei, Ravel P.] Yubelluna, Orange Soul
Mario Eats Asriel's Boogers by callofdutyFTWnintendoFTL
Mario eats Asriel's boogers from his nostrils inside his nose. Mario loves to eat Asriel's mucus very much! Bing bing wahoo!
Crossover - Mario & Undertale - Rated: M - English - Humor/Parody - Chapters: 1 - Words: 615 - Favs: 1 - Published: 6/21 - Mario, Asriel - Complete
Principal Willaby Kills Miss Fowl by callofdutyFTWnintendoFTL
Principal Willaby is very tired of Miss Fowl being a Channel Awesome fan, and he must do something about it!
Crossover - Jimmy Neutron & Undertale - Rated: M - English - Supernatural/Fantasy - Chapters: 1 - Words: 1,162 - Published: 6/15 - Ms. Fowl, Principal Willoughby, Asriel, Asgore D. - Complete
Pokétales by Moonwatcher425
Frisk used the reset button, but it glitched and instead of resting like normal. Everything reset to a new and different world. Sans, Papyrus, and the other Monsters were brought along too. Frisk was not sure what was going on at first but she soon figures out where they were.
Crossover - Pokémon & Undertale - Rated: T - English - Adventure/Mystery - Chapters: 3 - Words: 5,091 - Favs: 3 - Follows: 2 - Published: 6/12 - [Ash K./Satoshi, Serena] [Sans, OC]
Into a New Reality by attripae reviews
After fighting in Chara's genocide run for what seemed like a lifetime now, Sans devised a new plan to get rid of the wraith, in the hopes of giving his brother a happier life. In doing so, there were unintentional side effects and Sans found himself in an entirely new world. Undertale—more specifically, Sans, meet the Marvel Cinematic Universe.
Crossover - Marvel & Undertale - Rated: K+ - English - Sci-Fi/Fantasy - Chapters: 34 - Words: 73,553 - Reviews: 8 - Favs: 55 - Follows: 73 - Updated: 6/11 - Published: 2/7 - Sans
Journey of a Saiyan by Charisonic558 reviews
This is my take on the dragonball universe, but with my own original saiyan character. We go through the adventures of a young saiyan named Cherik who was raised on earth and is discovering what he's really capable of.
Crossover - Dragon Ball Z & Undertale - Rated: T - English - Adventure - Chapters: 22 - Words: 68,040 - Reviews: 5 - Favs: 8 - Follows: 11 - Updated: 6/5 - Published: 11/25/2016
Freedom In The Rain by maken.bialy2
Critical point has been reached. BC Freedom no longer could remain in a way it was after Oarai smashed their last attempt at achieving anything in Sensha-do. However, a likely enigmatic source of change happen to come in aid throu accident, causing another ones to follow thanks to very peculiar girl earning an even more peculiar being in her soul...
Crossover - Girls und Panzer/ガールズ&パンツァー & Undertale - Rated: M - English - Friendship - Chapters: 7 - Words: 17,014 - Favs: 1 - Follows: 1 - Updated: 5/30 - Published: 12/13/2022 - Oshida, Andou, Marie, Arisa
Mario and Asriel's Adventures by callofdutyFTWnintendoFTL
The many adventures of Mario and Asriel in many worlds and funny places!
Crossover - Mario & Undertale - Rated: M - English - Adventure/Supernatural - Chapters: 1 - Words: 1,151 - Published: 5/26 - Mario, DK, Asriel, Asgore D. - Complete
Gokuexe (CREEPYPASTA) by callofdutyFTWnintendoFTL reviews
A really scary story about Goku, a guy plays a game he found on a CD labeled "Goku.exe." Goku does a lot of evil and scary things to people! Beware of crazy Goku!
Crossover - Dragon Ball Z & Undertale - Rated: M - English - Horror/Suspense - Chapters: 1 - Words: 780 - Reviews: 1 - Favs: 1 - Published: 5/26 - Goku, Asriel - Complete
Worlds above the Underground (Rewrite) by bopdog111 reviews
(Rewrite of Ulrich's idea) Frisk Dreemurr did the impossible and freed the monsters from their prison under Mt. Ebott. She saved all of monster kind and even went the extra mile to try and bring back Chara and Asriel and succeeded. Now on the Surface the three Dreemurr children have a new goal, becoming three great Entertainment Duelists. Co-Write with Ulrich362
Crossover - Yu-Gi-Oh! Arc-V & Undertale - Rated: T - English - Suspense/Adventure - Chapters: 19 - Words: 113,468 - Reviews: 5 - Favs: 26 - Follows: 28 - Updated: 5/25 - Published: 2/8/2021 - [Yuya S., Frisk] [Yuzu H., Asriel]
Careful What You Wish For by Polarfog
To Leave Video Game/Undertale crossover. Thanks to passing his unwanted test, Sans now has information he shouldn't be possessing. And the new information he gains makes remembering resets look like heaven. Sequel to Earn It. This story was inspired by angela1066's comment on ao3 asking if Sans was going to learn about the player. One Shot.
Crossover - Misc. Games & Undertale - Rated: K+ - English - Chapters: 1 - Words: 410 - Published: 5/18 - Sans - Complete
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