Aluna nightsong
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Joined 07-28-22, id: 15519065
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The Memoir of Frisk by dafid1 reviews
What if Frisk went to the world of Fairy Tail?
Crossover - Fairy Tail & Undertale - Rated: K+ - English - Adventure/Friendship - Chapters: 12 - Words: 16,837 - Reviews: 22 - Favs: 63 - Follows: 63 - Updated: 10/11 - Published: 6/5/2022
Under the Veil by poplasia reviews
Sans has gotten himself stuck in the void between worlds in a successful attempt to stop the resets of his timeline. He's not sure how long he's been chillin' alone there, but eventually a chance at escape stumbles his way in from the Veil of Death. His name?—Sirius Black. (no pairings)
Crossover - Harry Potter & Undertale - Rated: T - English - Fantasy/Humor - Chapters: 73 - Words: 263,453 - Reviews: 2280 - Favs: 2,498 - Follows: 2,837 - Updated: 9/1 - Published: 8/1/2016 - Sirius B., Sans
Fallen Spider by Cap10FroggerGuy reviews
When Peter Parker wakes up in some strange cavern after a long fall, he quickly finds the world he is in is full of monsters: Most friendly, but a few wanting him dead. Along with a snarky disembodied voice, he travels this world to find his way home... hopefully in one piece. NOTE: Spoilers for Undertale and FFH. I have also made Chara specifically female for simplicity's sake.
Crossover - Avengers & Undertale - Rated: T - English - Adventure/Friendship - Chapters: 37 - Words: 65,404 - Reviews: 64 - Favs: 117 - Follows: 103 - Updated: 8/13 - Published: 5/22/2020 - Complete
Red Eyes to Red Soul by KingRenetti Studios reviews
after defeating Omega Flowey, Frisk returns to the surface and returned to her normal life. however, her guilt and regret draws her back to the Underground but is followed by a classmate who noticed her strange behavior. This person is Akio Uchiha. what turned into a chance encounter turns into a fight for his life as he ventures to the Underground and back.
Crossover - Naruto & Undertale - Rated: T - English - Fantasy/Adventure - Chapters: 6 - Words: 14,756 - Reviews: 1 - Favs: 7 - Follows: 5 - Published: 2/2/2023 - Frisk, OC, Sans, Toriel
Batmantale by AlithiaSigma reviews
Batman finds himself in the Underground with nothing but his clothes and the drive to continue on. Really, it's Batman in Undertale. And Batman does have one power. He never gives up.
Crossover - Batman & Undertale - Rated: T - English - Chapters: 9 - Words: 16,801 - Reviews: 122 - Favs: 139 - Follows: 209 - Updated: 10/6/2022 - Published: 2/21/2016 - Bruce W./Batman, Sans
Skeleton monster of Beacon by CykaBlyatintensifies reviews
During the absolute genocide run, Sans killed the human. Instead of letting their soul shatters, he took the shards and absorbed it. After absorbing the soul, he turned into a human and absorbed the other 7 to break the barrier. He then found himself in an anime-ish world. Now, he must fight against a darkness that lingers in this world. Finally, the art is not mine.
Crossover - RWBY & Undertale - Rated: T - English - Humor/Hurt/Comfort - Chapters: 25 - Words: 74,872 - Reviews: 59 - Favs: 263 - Follows: 310 - Updated: 7/10/2022 - Published: 9/28/2020 - Sans, Team RWBY, Team JNPR, Chara
Another World - Perm Hiatus by LaeIsGone reviews
Sans has been killed by Chara once again, except this time when he wakes up he's no longer in the underground. He's in a new world that seems entirely different. A world full of people he has never seen before. What adventure awaits him? What will happen as he travels? And will he make it out alive?
Crossover - RWBY & Undertale - Rated: T - English - Adventure/Suspense - Chapters: 10 - Words: 13,544 - Reviews: 53 - Favs: 82 - Follows: 113 - Updated: 4/6/2022 - Published: 1/16/2019 - Ruby R., Ozpin, Glynda G., Sans - Complete
The Tale of Remnant by Thechaoticjevil reviews
After waking up from a nice ol' nap our good old pal sans the funny skeleman finds himself lost in a new world where death awaits right around every corner. Now he just wants to go back to sleep. (Sans isn t a human btw)
Crossover - Undertale & RWBY - Rated: T - English - Adventure/Humor - Chapters: 12 - Words: 49,442 - Reviews: 152 - Favs: 273 - Follows: 340 - Updated: 9/19/2021 - Published: 2/3/2021 - Sans
Guiding More Honest Souls by The MZ-FIT G-MR'S Productions reviews
Sans has gotten a bit lost after certain events. Now, he has a choice to make. Will he help guide the future heroes of Remnant, or will he let himself fall into a rut of laziness as he did before? All he knows is that either way... he's going to make as many bad jokes as he can. Adopted from Mugiwara N0 Luffy. (ON HIATUS)
Crossover - RWBY & Undertale - Rated: T - English - Adventure/Humor - Chapters: 11 - Words: 70,672 - Reviews: 111 - Favs: 522 - Follows: 576 - Updated: 3/13/2021 - Published: 6/20/2018 - Ozpin, Team RWBY, Sans
A New Chance by Matthew Cruz reviews
Sans... He has suffered from so many genocides, but when he gets a chance on a new life from someone... Will he take it? And leave this infinite loop, or will he stays in this hell of a world. (Rated T for strong language in the future, deciding if I should changed this to Rated M for the future, but still deciding, and finally art not mine.)
Crossover - RWBY & Undertale - Rated: T - English - Adventure - Chapters: 11 - Words: 48,450 - Reviews: 58 - Favs: 134 - Follows: 172 - Updated: 12/23/2020 - Published: 6/13/2020 - Weiss S., OC, Sans
On Stranger Timelines (Or Alternate Universes, In This Case) by SpiritOfErebus reviews
A discontinued first draft. Sans finds himself somewhere new after a reset... as a human. Maybe Undyne was right when she said anime was real. A first draft I'm uploading because I don't have anything better to do with it. The rewrite's probably going to happen in a year or two as of 9/5/2020... or never...
Crossover - RWBY & Undertale - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 20,558 - Reviews: 5 - Favs: 33 - Follows: 45 - Published: 9/4/2020
The Dreamer and the Moon by Starkeeper-Fanfic reviews
Luna discovers a new door in the Dream Hall and meets someone new... A king, in fact. They grow close over time and when Grogar's Legion strikes, Luna turns to Asgore for aid. Spans season 9 of MLP:FiM and happens before Frisk's fall in Undertale. LunaxAsgore shipping. Rated T for events happening Ch6 and onward.
Crossover - My Little Pony & Undertale - Rated: T - English - Romance/Fantasy - Chapters: 6 - Words: 14,732 - Reviews: 6 - Favs: 28 - Follows: 33 - Updated: 8/21/2020 - Published: 1/21/2020 - [Princess Luna/Nightmare Moon, Asgore D.] Grogar, Flowey
A new chance at one HP by emeraldleafeon reviews
Sans should be dead, he only has one HP after all, he felt the knife hit him, he saw himself turning to dust. Then why is he not dead? An Undertale and My Little Pony crossover. Of which I own neither, Toby Fox owns Undertale and My Little Pony belongs to Hasbro. Please enjoy
Crossover - My Little Pony & Undertale - Rated: T - English - Humor/Fantasy - Chapters: 21 - Words: 53,783 - Reviews: 150 - Favs: 313 - Follows: 349 - Updated: 2/16/2020 - Published: 10/23/2016 - Princess Celestia, Princess Luna/Nightmare Moon, Sans, Gaster
Logs of SCP-6825 by x6568tank reviews
WARNING! THIS FILE IS A LEVEL 3(SECRET) FILE, ARE YOU SURE YOU WISH TO PROCEED IN OPENING THIS FILE? IF YOU ARE NOT AUTHORIZED TO OPEN THIS FILE YOU WILL BE SEVERELY PUNISHED. PROCEED?
Crossover - SCP Foundation Mythos & Undertale - Rated: T - English - Humor/Supernatural - Chapters: 1 - Words: 1,741 - Reviews: 9 - Favs: 54 - Follows: 37 - Published: 12/28/2019 - Sans
Patient Justice by WyFern Writing reviews
After the Genocide Route, Sans dies. He expects a reset after that, and for everything to be normal again. But instead, Sans wakes up in a strange world where humans can use magic, almost all monsters are evil, and demons exist. He meets a wizard guild, Fairy Tail, and things go insane when he joins the guild. How will Sans fair in this world?
Crossover - Fairy Tail & Undertale - Rated: K+ - English - Humor/Adventure - Chapters: 5 - Words: 8,925 - Reviews: 13 - Favs: 72 - Follows: 88 - Updated: 7/10/2019 - Published: 6/19/2019 - Robert, Sans
Percy Jackson Meets Undertale by RandomPotatoKid reviews
A little crossover story of Percy Jackson and Undertale. I always wondered what it would be like if these universes crossed each other, so i decided to write about it. I hope you enjoy!
Crossover - Percy Jackson and the Olympians & Undertale - Rated: T - English - Adventure/Supernatural - Chapters: 6 - Words: 12,565 - Reviews: 42 - Favs: 44 - Follows: 49 - Updated: 1/31/2019 - Published: 7/11/2018 - Jason G., Percy J., Sans, Frisk
A Different Kind of Tale by KateInTheNight reviews
Sans knew he couldn't not care anymore. The human had killed his friends right in front of his eyes too many times to count. So, he did something about it. And it worked. Except, he just didn't expect this to happen…
Crossover - Fairy Tail & Undertale - Rated: T - English - Adventure - Chapters: 15 - Words: 50,714 - Reviews: 100 - Favs: 186 - Follows: 234 - Updated: 11/23/2018 - Published: 8/11/2017 - Robert, Sans
More Like A Monster by liketolaugh reviews
When Mustang's subordinate, Major Sans Serif Font, reveals himself as a monster to save Hughes' life, Mustang is faced with what is in equal parts an opportunity and a risk - a chance to recruit the monsters before the rest of the military can. Luckily, he's good at that sort of thing, even with a few... complicating factors. (It always seemed to circle back to Ishval.)
Crossover - Fullmetal Alchemist & Undertale - Rated: T - English - Drama - Chapters: 1 - Words: 5,037 - Reviews: 13 - Favs: 63 - Follows: 30 - Published: 10/15/2018 - Roy M., Frisk, Sans, Toriel - Complete
Epic Pun Battle of Fanfiction by TalkingSalad12 reviews
In a battle of puns and rhymes, Yang and Sans finally go head to head. one-shot
Crossover - RWBY & Undertale - Rated: T - English - Humor - Chapters: 3 - Words: 1,107 - Reviews: 15 - Favs: 13 - Follows: 12 - Updated: 9/18/2018 - Published: 9/11/2018 - Yang X.L., Sans - Complete
PTA Sans by FadedZane reviews
Had no idea what to name it and my first PTA Sans Fanfiction as well as my first Undertale Fanfiction cx and along with the Genres are Romance,and hurt and comfort :p
Crossover - My Little Pony & Undertale - Rated: T - English - Drama/Family - Chapters: 2 - Words: 2,629 - Reviews: 3 - Favs: 6 - Follows: 4 - Updated: 8/9/2018 - Published: 8/7/2018 - [Scootaloo, Sans] Frisk
Adopted by Proudy1019 reviews
Percy Jackson thought that his life couldn't be any weirder. From being a demigod, he had been in very weird situations before. But when his parents got killed by a fire, and then he got adopted. He thought it wasn't really THAT weird until until he saw that it wasn't a mortal that was signing the adoption papers. Instead, she was a goat. A freaking goat. How would Percy cope to li
Crossover - Percy Jackson and the Olympians & Undertale - Rated: K+ - English - Adventure - Chapters: 4 - Words: 2,375 - Reviews: 30 - Favs: 49 - Follows: 68 - Updated: 4/20/2018 - Published: 7/30/2017 - Chiron, Annabeth C., Paul B., Percy J.
Judge of the Underworld: The Titan's Curse by Last Step reviews
After hundreds of RESETS, Sans finally finds a way to stop Chara. However, these events lead to unforeseen consequences. Now finding themselves stuck in an entirely different universe, Sans and Frisk has to learn to survive in a new world where mythology becomes reality. However, they aren't the only ones who came along from the Undergound... Pacifist/Neutral!Frisk and Demigod!Sans
Crossover - Percy Jackson and the Olympians & Undertale - Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 1,862 - Reviews: 20 - Favs: 55 - Follows: 88 - Published: 4/5/2018
The Sansational Skeleton by westwindwaker reviews
Through different encounters, the Avengers get to know Sans.
Crossover - Avengers & Undertale - Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 2,002 - Reviews: 14 - Favs: 81 - Follows: 84 - Published: 2/27/2018 - Sans
Dust by FlamingFlyingFoxOfDoom reviews
Edward found a blue jacket.
Crossover - Fullmetal Alchemist & Undertale - Rated: T - English - Friendship/Hurt/Comfort - Chapters: 3 - Words: 4,716 - Reviews: 38 - Favs: 119 - Follows: 131 - Updated: 2/24/2018 - Published: 8/22/2017 - Edward E., Sans
The Blue Alchemist by FlamingFlyingFoxOfDoom reviews
A new state alchemist appears. And he's very, very... peculiar. Now that Roy is assigned this strange man, what hijinks will unfold? How many hotdogs can be stacked on the Colonel's head while he's asleep? ... And what is the man's true goal?
Crossover - Fullmetal Alchemist & Undertale - Rated: T - English - Family/Humor - Chapters: 21 - Words: 37,605 - Reviews: 463 - Favs: 676 - Follows: 798 - Updated: 7/30/2017 - Published: 2/12/2016 - Edward E., Roy M., Sans
UnderFairy by TheTwoMind reviews
Undertale... Is gone. beings now celestial spirits... A young girl with new keys, 12 of crystal, an unknown number of stone... (This is my first try at one of these ones. Don't judge me!)
Crossover - Fairy Tail & Undertale - Rated: T - English - Friendship/Family - Chapters: 3 - Words: 3,798 - Reviews: 22 - Favs: 65 - Follows: 69 - Updated: 6/24/2017 - Published: 6/7/2017 - Lucy H., Frisk, Sans, Chara
UnderShinobi:Tale of the soulbound brothers by Sagiel reviews
An unlikely meeting between two tortured souls, what could be the result? And is peace something that can really be attained without violence? two philosophy, two worlds, let's see what happen when they collide. ADOPTED by PinkiePieParty122894
Crossover - Naruto & Undertale - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 2 - Words: 3,850 - Reviews: 15 - Favs: 38 - Follows: 48 - Updated: 12/23/2016 - Published: 6/11/2016 - Naruto U., Asriel
Do you wanna make a Deal ? by Chysack reviews
Sans et l'Ombre s'affrontent. Le sang teinte les pavés qui composent le sol du corridor. Mais parfois on ne peut survivre sans aide.
Crossover - Gravity Falls & Undertale - Rated: T - French - Chapters: 1 - Words: 2,184 - Reviews: 3 - Favs: 5 - Follows: 3 - Published: 10/27/2016 - Complete
The Blue Guardian by Hydrana reviews
The Boogeyman has returned and he's stronger than ever. However, there's one tiny problem. He's not alone. Of course the Guardians are there to stop him. But they're not strong enough. A new Guardian is chosen to defeat the beings of fear and determination. But he has given up on fighting. *Will be updated soon! I can finally update it.*
Crossover - Rise of the Guardians & Undertale - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 7 - Words: 4,850 - Reviews: 68 - Favs: 96 - Follows: 129 - Updated: 7/30/2016 - Published: 4/5/2016 - Jack Frost, Sans
Down the Rabbit Hole by Falcrow reviews
When a silly prank takes a nasty turn, Nico finds himself falling into the underground. Trapped behind the magic barrier, and exhausted from the previous week's trip, Nico finds himself walking his way through the underground. Set right after the war with Gaea, Nico replaces Frisk on a true pacifist run. Lots of fluffy shenanigans.
Crossover - Percy Jackson and the Olympians & Undertale - Rated: K - English - Humor/Friendship - Chapters: 6 - Words: 26,439 - Reviews: 101 - Favs: 188 - Follows: 240 - Updated: 6/6/2016 - Published: 1/19/2016
Celestial Tale by Darkus Cyril reviews
Post Genocide, After Chara erases the world, Frisk intervenes and saves Sans, Papyrus, Toriel, Asgore, Asriel, Mettaton, and Undyne. However, they are offered a chance at a new life by a grand being, and become Celestial Spirits. Now they must adapt to their new lives in Earthland and the Celestial Spirit world. Neutral Chara.
Crossover - Fairy Tail & Undertale - Rated: T - English - Chapters: 5 - Words: 19,220 - Reviews: 168 - Favs: 338 - Follows: 400 - Updated: 5/3/2016 - Published: 2/14/2016 - Lucy H., Frisk, Sans, Chara
One punch Tale by Stoneificaunt reviews
One punch, one shot, undertale parody.
Crossover - One Punch Man/ワンパンマン & Undertale - Rated: T - English - Humor/Parody - Chapters: 1 - Words: 1,296 - Reviews: 6 - Favs: 38 - Follows: 17 - Published: 4/27/2016 - Saitama, Frisk, Flowey - Complete
Reset, Reset and Reset by AikaAlonelove reviews
Sans, after 1367 resets, had enough. The kid beat him once again in the genocide route. He became dust with the slash of the kiddo, which he found out to be Chara. It was the end for him, for this timeline. Everything would reset and replay again. But it didn't. He awoke as Jack Frost.
Crossover - Rise of the Guardians & Undertale - Rated: T - English - Drama/Angst - Chapters: 2 - Words: 1,847 - Reviews: 16 - Favs: 37 - Follows: 59 - Updated: 4/8/2016 - Published: 4/7/2016
How to Train Your Monster by Aboverain reviews
How to Train Your Dragon, with one big difference - instead of dragons, we have monsters. *title and summary may change*
Crossover - How to Train Your Dragon & Undertale - Rated: T - English - Adventure/Friendship - Chapters: 7 - Words: 21,504 - Reviews: 119 - Favs: 145 - Follows: 153 - Updated: 3/12/2016 - Published: 2/20/2016 - Hiccup, Sans
The Angel of the Monsters and The Mystery Twins by Flurryheart reviews
Frisk is running in a forest away from "something" when she meets 2 twins. They have to unite to defeat Bill and bring Flowey back to normal.
Crossover - Gravity Falls & Undertale - Rated: T - English - Fantasy/Friendship - Chapters: 2 - Words: 1,071 - Reviews: 9 - Favs: 18 - Follows: 34 - Updated: 2/15/2016 - Published: 2/1/2016
Deal With a Devil by True Pacifist reviews
Summary in beginning of chapter-Also published on AO3 Please feel free to leave any feedback or comments
Crossover - Gravity Falls & Undertale - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 13 - Words: 13,027 - Reviews: 45 - Favs: 78 - Follows: 53 - Updated: 11/23/2015 - Published: 10/24/2015 - Bill, Papyrus, Sans, Chara - Complete