UndertaleFanfics
110 stories
Angel of darkness ( fallen angel reader x sans) by undyne3004
undyne3004
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your family are angels living on earth but you were different , you had dark wings and were a disgrace to the family so you were left alone for years until you find Mt Ebott
A Mermaid Tail (Papyrus x mermaid reader) by undyne3004
undyne3004
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(Sorry for the pun in the title 😂) you were no ordinary girl, even though you seemed it most of the time, if you were to get water on yourself you would transform into... a Mermaid!
Muffet X Reader by AlphyneLovechild
AlphyneLovechild
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Hi, this is my first fanfiction. I'm doing this for a competition with @troxyist so :P. So basically a Muffet x Reader Fluff. Well have fun :3
Goodnight, Kiddo... (Adopted by Sans! Reader Fanfic) by TheShortSensei
TheShortSensei
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You are an orphan, abandoned by your parents at birth. You've lived between countless foster families and a dreaded girl's home for as long as you can remember, because nobody chose to adopt you. Now, you are fifteen years old, and you decide to run away. Monsters have been living on the surface come four years now. What could become of this new adventure? Heyyyyyy! TheShortSensei here! I strongly suggest reading my former Undertale x reader book, When Spaghetti is your Life, before looking at this one. This book is a continuation of that one, so there may be spoilers if this one is read first! I will probably be using female-based pronouns, but I don't want it to be so gender based. Have fun, guys! Thank you for choosing to read this trash. Please comment and tell me what you think! P.S. If you're still reading, you get an invisible gold star sticker from yours truly. Well, what are you waiting for? I already gave you that sticker, didn't I??
Undertale! Grillby x (Half)Monster! Reader by EmilySkelewolf
EmilySkelewolf
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You were a teen adopted by the skeleton bros, you personally hung out with Sans more then Papyrus cause if his training. Most times you both went to the ruins but, Sans wanted to take you to Grillby's. That's when you meet Grillby and the reason why you your flames increase is unknown. You are a human/fire monster
HybridTale by Rainbowjuju
Rainbowjuju
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Artemis, a powerful human-monster hybrid, has the ability to absorb power from human and Monster souls. Alas, being half monster during the War of Humans and Monsters, her very existence is frowned upon by the human royals. When she and her mother are backed into a corner, what will happen to the child? An Undertale AU that is the brainchild of my friend @katerinamonteil
To think I once hated you... (Sans x Author!Reader) by starcatcher3000
starcatcher3000
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Everyone's on the surface. Frisk brought back Asriel. Everything was grand, except their monster family started ignoring them. At the beggining they just thought it off, until their birthday when everyone gave Asriel presents instead of them. Asriel kept on bulling them, so they did what they first thought of... they ran away. They took their favorite book, Undercast, an adventourus book by Lilac Sky, the best author of 201X. They ran until they reached a park and met a nice person named Y/n. What happens when the only birthday present they get that one year is one they've been wishing their whole life, and it was granted by a stranger. Credit to Toby Fox for the characters their not mine.
Eyes of Soul by DragonessFire
DragonessFire
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Looks like another human has fallen down. What a scaredy cat they are. Frisk was so much more braver than them. Too bad Frisk took themselves out of the picture. At least this one is interesting, being able to see the souls of the dead that is. I wonder how she'll affect the timelines....? Heh heh. I guess only time will tell. Disclaimer: I do not own Undertale, Toby Fox does. I do however own Nevaeh and all the art contained in this book (Except when I say otherwise).
My Knight In Shining Bones (Sans x Reader) by QueenOfNekoWriters
QueenOfNekoWriters
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What instead of having a son, Toriel and Asgore had a daughter? A daughter who never died? A daughter named (y/n). Monsters have been locked in the underground for many years now, and their only hope is to collect seven human souls to break the barrier. With six souls in their collection, they're so close to breaking free. ... But what will happen when a certain demonic child by the name of Chara enters the realm of the monsters, and begins slaughtering them off one by one? Will (y/n) be able to save her people? Or, will she be unable to save the ones she cares about most? *** As of 5/9/2018 this story was ranked #18 for 'reader x sans'. As of 6/16/2018 this story was ranked 704 for 'undertale'.
Kitty, You're Safe *Sans X Abused Neko Reader* by Tikki2968
Tikki2968
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When a neko falls into the Underground, what does everyone do? They, of course, question her. But she holds a secret from her friends, and she plans on never telling them, afraid she will shatter her dream with the idea of... him.