Fellsans Stories

Underfell is a dark world with the major rule of kill or be killed. Even though children are suppose to be secluded from this rule, that doesn't stop monsters from hurti...

!! STORY COVER IS MINE, CHARACTERS DO NOT BELONG TO ME EXCEPT Y/N !! (ps, I forgot the book I got inspired in doing this.) (Book is currently undergoing slow updates😵‍�...

(COMPLETED!!(with here and there new chapters) but mostly COMPLETED!!) i was makeing sans bitty x reader befor this and got bored so i made this instead please enjoy :) ...

The cover of this book is made by ♡͙♡͚ɢʀaɖɨɛռt♡͚♡͙ on Pinterest. Error had enough of the violence in his multiverse so he decided to jump into the void in hopes of commi...

One clumsy moment and a broken leg are all it takes to leave you at the mercy of the very edgy and very hostile monsters of the underground. Thanks to your knowledge as...

Here's the fourth book! thank you all for all the love and nice comments on the first, second, and third book! NO LEMONS! FLUFF AND YANDERE ONLY! Mostly Au sans and pa...

The king of hell (fell sans) saw a new monster in the after life, an angel (classic sans). Though he was in hell he still wants someone to love. So how does he make clas...

Kinda like discord but with the Undertale Aus this will be very stupid

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...

𝐔𝐍𝐃𝐄𝐑𝐕𝐄𝐑𝐒𝐄 𝐗 𝐑𝐄𝐀𝐃𝐄𝐑 | 𝐑𝐄𝐀𝐃𝐄𝐑 𝐈𝐍𝐒𝐄𝐑𝐓 ‹―💜―› "𝐅𝐀𝐍𝐂𝐘 𝐒𝐄𝐄𝐈𝐍𝐆 𝐖𝐇𝐄𝐑𝐄 𝐘𝐎𝐔 𝐀𝐑𝐄 𝐍𝐎𝐓 𝐒𝐔𝐏𝐏𝐎𝐒𝐄𝐃 𝐓𝐎 𝐁𝐄, 𝐖𝐀𝐍�...

Classic Sans incidentally finds himself working as a maid for eleven different skeletons in a mansion, after accidentally breaking a statue worth millions of dollars. Wh...

The reader has died and has been reborn as a killer sans but pregnant He has to learn how to use his powers and learn about himself first ------------------------------ ...

(Art not mine, credits to the original artist) hey first book you can give any request, and i'll well try to do them, so if you want i can try to do lemons if you want t...

Guess who's back into another fandom yet again? That's right! Evangeline Hisahoshi! Hello everyone and this is my newest book of one Shots because the undertale has fina...

"ᴇᴠᴇɴ ᴛʜᴏᴜɢʜ ʏᴏᴜ ᴍᴀʏ ʙᴇ ᴇᴠɪʟ...ɪ ᴄᴀɴ ꜱᴛɪʟʟ ꜱᴇɴꜱᴇ ɢᴏᴏᴅ ɪɴ ʏᴏᴜ" "ʜᴏᴡ? ᴡᴇ'ᴠᴇ ᴅᴏɴᴇ ɴᴏᴛʜɪɴɢ ʙᴜᴛ ᴋɪʟʟ, ᴛᴏʀᴛᴜʀᴇ ᴀɴᴅ ᴀʙᴅᴜᴄᴛ. ʏᴏᴜ ᴄᴀɴ'ᴛ ᴘᴏꜱꜱɪʙʟʏ ꜱᴇᴇ ᴀɴʏᴛʜɪɴɢ ɢᴏᴏᴅ...

"Hm?" Timer asks taking his wrist watch off, checking the time before taking out a screwdriver and pulling it apart. Nervous habit of his. The meeting between...

This is a medieval AU, where Classic is a prince of a kingdom, while Red is a thief/bandit in the Kingdom Classic isn't happy with his life, all the formalities and etiq...

•His life is not easy, he tries not to act weak in front of people who understand him or listen to him, who hate him because of his work But it's not his fault, his life...

Nightmare is a simp for Error thats all ya need to know.. love at first sight? slowly falls into simpness? Will Error like him back? maybe..idk..read to find out Also...

Error, was also Sans one's. He had a life before he woke up in the anti-void, and lost his memory about his past. His old self. The REAL him. His bones turned to Black...