underfell
14 stories
Scars: Female Chara X Male Reader by -_OutLaw-Rising_-
-_OutLaw-Rising_-
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I'm bad with descriptions
Sans And Papyrus' Pet~  ~Completed~ by GalaxyTheFur
GalaxyTheFur
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‼️⚠️WARNING: MATURE THEMES SUCH AS SEXUAL ACTIVITY AND TW'S PLEASE READ AT YOUR OWN RISK⚠️‼️
Undertale and Percy Jackson by UT_Sans_Official
UT_Sans_Official
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What if the old Mt. Olympus was actually Mt. Ebott. What if when Frisk freed everyone they met Percy Jackson. This is my first crossover Story so don't judge it to hard please. So like always, LETS BEGIN!!!
Underfell Sans X Frisk by Hazefrost
Hazefrost
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When Frisk falls into the Underground, she is horrified to discover the world of monsters is every bit as evil and broken as she had been told her entire life. But when she meets Sans, she wonders if there is love inside some of the monsters after all...
My Little Puppy (Fell!Sans x Wolf!Reader) by Time_Shadow
Time_Shadow
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(Y/N) is a human. She had lived her whole life as Sans and Papyrus's pet, which was even more appropriate considering that Alphys had done a few experiments on her giving her dog ears and a dog tail, as consolation for keeping her a secret. Then one day, (Y/N) manages to escape, and meets with Frisk. What will follow after that, with her trying to escape and Frisk's shady actions? Well, you'll have to read to find out, now won't you? *Warning: cursing* ( Also, it might get a bit [Toasty!] at some point or other, and don't read if sensitive. ALSO also, we don't update often so CALM YO TITTIES.) *😑* (Whaaaaaaaaaaaaat?)
PET  |Underfell Sans x Frisk| ✓ by frannfrann7
frannfrann7
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COMPLETED✓ Highest Rank #3 in underfell (May 14, 2018) Highest Rank #6 in sansxfrisk 11.19.18 Breaking the Barrier and free all Monster kind and welcome them. What if... The Skeleton friend has feelings for the Human and wanting her to himself? Becoming his.... PET Started: May 26, 2017 Ended: September 29, 2017
My Pet~ Underfell Sans x Reader by Dark_InsanityX3
Dark_InsanityX3
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A fan fiction from a fangirl who needs to go to therapy once and a while ~Darky
A True Pacifist (Male Reader x Female Frisk) by KryogenFalls
KryogenFalls
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Mt. Ebbot. The mountain having more questions than answers. They say that those who enter are never seen again. We'll just have to see about that when you and your best friend Frisk enter the mysterious mountain, not by choice, but by accident. This should go well. Also, like many others, it's late and I'm bored.
Gravitytale by Cipherian
Cipherian
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Spoilers for after Undertale and after Gravity Falls! The twins are coming back to Gravity Falls for their winter break. However. The mountain just by Gravity Falls had a strange event a few weeks after the twins left. Monsters from the fabled "Underground" started coming out of Mt Ebott. With their savior, Frisk. Now Frisk and their monster family live peacefully in the nearby town of Gravity Falls. What shenanigans will the twins get up to this time? What will they discover? *This takes place after Gravity Falls' Finale and Undertale's True Pacifist ending!* The original Gravitytale idea as well as the intro music used was made by the amazing Jeffrey Watkins. Check them out on Youtube and their story on AO3! I thank them for inspiring me to make my own fanfiction. This is my first story and first time writing a story, it might not be any good, but do enjoy!
'Shy Pet' Underfell Sans X Reader by sentifrost
sentifrost
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[Disclaimer that this book is very old nd poorly written, please keep that in mind!] You were shy. You were small. You were picked on. You were told you weren't tall enough. You were hurt. Physically and mentally. He wanted a pet. He wanted someone who wasn't his brother. He wanted someone to talk to. He wanted a purpose. He wanted you... {If you are reading this story on any platform other than Wattpad, you are very likely to be at risk of a malware attack. If you wish to read this story in it's original, safe form, please go to Wattpad. Thank you.} [EDIT: I am now aware of the plot errors in this story, but this book will never be edited nor re-written, so I kindly ask you to stop commenting about them.] ~Achievements~ ~ #1 in #Alphys ~ ~ #1 in #Fell ~ ~ #1 in #Underfell ~ ~ #3 in #Flowey ~ ~ #1 in #Fellsans ~ ~ #3 in #Underfellsans ~ ~ #1 in #Mettaton ~ ~ #1 in #Papyrus ~