Red Mask
- Reads 310
- Votes 35
- Parts 9
Ongoing26m
Last published Fri, Jun 19, 2026
Underfell is a dark and dangerous place filled with murder in violence, and Sans and Papyrus are the pinochle of it all.
So nobody would ever suspect Sans to come back after a lost bet.
Maybe you haven't seen all of what's under Red's mask, huh?
Request for Icecream_Shipper
All Rights Reserved
#748
guitarist
Join the largest storytelling communityGet personalized story recommendations, save your favourites to your library, and comment and vote to grow your community.
You may also like
Just SING | Sans X Reader
--Long ago, two races ruled over Earth-- --HUMANS and MONSTERS-- --One day, war broke out between the two races-- --After a long battle, the Humans were victorious-- --They sealed the monsters underground with a magic spell-- --Many years later...-- --MT. EBBOT, 201X-- --Legends say that those who climb the mountain never return.-- What if the legend is real? And what if the legend was all wrong? Start date: 4-25-2017 End date: 1-14-2018 Undertale & Characters ~ Toby Fox Plot, Book & Cover art ~ Me You ~ Sans ;) (I do not know why, I just keep putting 'You belong to Sans'/'You ~ Sans in all of my Sans X Reader descriptions from this point forward.) (Warning: Mild language and uh... fangirliness? Maybe, I don't know if you humans think this something to fangirl over.) 1K [•] Date: May 20, 2017 5K [•] Date: July 27, 2017 10K [•] Date: September 6, 2017 25K [•] (probably wont happen) (and iT DID HOLY SHIT THANK YOU SO MUCH I CAN'T) January 16, 2017 50K [•] Date: August 19, 2018 (what the fuck???) 80K [•] Date: February 1, 2019 (y'all... what the HECK) 100K and #1 in the #sansxreader tag [•] Date: July 2, 2019 *wheezes* what the FUCK how did this shitshow get #1 in the fucking SANSXREADER TAG thank you????Complete
HM/EB: Forgiveness and Sacrifice
Sans has been beat and tortured for most of his miserable life, almost exclusively by his younger brother, Papyrus. But, what happens when Sans is ripped from what he knows? How will Papyrus react? And, more importantly, where will Sans end up? Papyrus has abused and belittled his brother for the majority of his life, unable to see just how much he had hurt the one person he cared about it his life. When he is lead to believe he has dusted his older brother, he loses all reason to live. What happens when he dies in Underfell, only to wake up in a completely different universe? Will have both HoneyMustard and Edgeberry. No smut, sorry :PComplete
Resetting Of Life
Kyra falls into the underground, while there she finds that her connection to the monster realm goes deeper then she thought. Cover by @rykosen Undertale belongs to Toby FoxComplete
Silently Sleeping (Underswap!Papyrus x Reader)
Underswap!Papyrus x Reader And some Fresh!Sans x Reader -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- It isn't hard to slip into a dream. You're happy with what your mind makes up and you stick with it until you wake up. Nightmares are hard to sink into. Death, tears, bloodlust, screams of terror and agony. You eventually wake up crying and wondering why your head would come up with something so sadistic. You're not in a dream. You never were. It's always been a nightmare. Always. -_-_-_-_-_-_-_-_-_-_-_-_-_- "My heart fills so... empty." "Please don't do this, (Y/n)!" "I'm sorry I caused so much pain... but we both don't have to suffer anymore."Complete
I'm The Apprentice: Underfell Papyrus X Female Reader
EDIT: READER AND PAPYRUS ARE BOTH IN THEIR TEENS!! WARNING: BOOK CONTAINS SWEARING/CUSSING AND VIOLENCE Just before she passed away, my grandmother told me about the monsters who lived under Mount Ebott. My mother hated everyone. My father died in the war of the monsters. My grandmother decided to whisper to me: "Promise me, You will find, A better family. One who will love you, No matter their duties. I will love you too, I will be watching you. No matter your choice, Let me hear your happy voice." So that's what I did. Her words went through my head as I climbed the mountain, hoping that a monster could help me. - "Sans flinched as the shouting downstairs grew louder. The ropes around my wrist seemed to grow tighter as I struggled, hoping to break free from the monster stomping up the stairs angrily. As Sans stepped back, his door was smashed open. I took one long look at the figure standing there and instantly knew: this is why I am here." - (SLOW STORY! MANY SLOW CHAPTERS BECAUSE OF DETAILS)(COVER ART NOT BY ME!)Complete
Home (bad sanses x child reader)
You were an average kid, somewhat having a older mind than most of your classmates. you had always been into the undertale fandom, and even knew almost everything about the aus and soul colors. while what seemed like a normal day at school quickly turned around after a huge bang struck the class room next door. in this story y/n is nonbinary and 12-16 years old. But more interpreted as 14 I post a new chapter every 3 day and 5 days at the maximum. WARNING: this story will mention some forms of slight emotional harm. And Sexual abuse. Readers be safe. Please if you are in any danger, contact someone. You are not alone. With that aside enjoy the story . This story is finished as of September 1 2022, I encourage you to read my other story "Our Disturbing Love" And in the next month or couple weeks I plan on creating another bad sanses x reader.Complete
Write A Note (Sans x Female!Reader)
It's only been a few years since monsters have been released from their underground prison. In some towns, monsters are welcomed with open arms. Others? Not so much. Y/N is a 22 year old girl that lives a pretty simple life. Sleep, eat, work, relax at her daily cafe, go home, sleep. Then the routine starts again. However, her routine is thrown off when she keeps running into a skeleton, supposedly named Sans. She would like to get to know him more herself, but there's one problem.. He doesn't talk. Of course, Undertale belongs to Toby Fox, not me lolComplete
Your Fault ~ Underfell Fanfiction
{COMPLETED} Sans' life isn't easy, and living in an Underground society filled with torture, rape, and murder doesn't make it any better. Every single day is a struggle, and Sans tries so hard to fit in with other monsters and live up to his brother's standards, but sometimes it's just too much. Will Sans be able to pull through, or will the darkening thoughts that are engulfing his mind and Soul take control, and swallow him up into a void too deep and dark to ever imagine? DISCLAIMER: UNDERTALE is owned by Toby Fox. UNDERFELL belongs to the AU Community. COVER IMAGE edited by me. I do not own the original image. PLOT/STORYLINE belongs to me. The events in this story are not canon and are simply for the entertainment of myself and my readers. Any OCs mentioned in this story also belong to me. MATURE CONTENT WARNING: The events in this story contain mature content that some readers may find triggering and/or disturbing. Read at your own discretion. Thanks!!Complete
--Long ago, two races ruled over Earth-- --HUMANS and MONSTERS-- --One day, war broke out between the two races-- --After a long battle, the Humans were victorious-- --They sealed the monsters underground with a magic spell-- --Many years later...-- --MT. EBBOT, 201X-- --Legends say that those who climb the mountain never return.-- What if the legend is real? And what if the legend was all wrong? Start date: 4-25-2017 End date: 1-14-2018 Undertale & Characters ~ Toby Fox Plot, Book & Cover art ~ Me You ~ Sans ;) (I do not know why, I just keep putting 'You belong to Sans'/'You ~ Sans in all of my Sans X Reader descriptions from this point forward.) (Warning: Mild language and uh... fangirliness? Maybe, I don't know if you humans think this something to fangirl over.) 1K [•] Date: May 20, 2017 5K [•] Date: July 27, 2017 10K [•] Date: September 6, 2017 25K [•] (probably wont happen) (and iT DID HOLY SHIT THANK YOU SO MUCH I CAN'T) January 16, 2017 50K [•] Date: August 19, 2018 (what the fuck???) 80K [•] Date: February 1, 2019 (y'all... what the HECK) 100K and #1 in the #sansxreader tag [•] Date: July 2, 2019 *wheezes* what the FUCK how did this shitshow get #1 in the fucking SANSXREADER TAG thank you????
More detailsContent Guidelines