
#1
Ask and Dare Fell!Sans (& Friends...by Mustard is bæ
Ink!Sans and Error!Sans gave me a bit of the Anti-Void to use for this, so that's where I'll be hanging out most of the time.
So basically, my admin says that this is go...

#2
Random Fellcest Storyby Sanstalope
not much happens. *wink wink wink*
I'm bad at summaries.
this is trash and edge and stupidity.
don't read it, it's horrible XD

#4
The Grass is Always Greenerby UnderTale Trash #528
In Undertale, Classic Sans loves his brother more than anything. Its the same for so many versions of himself. However, they can never receive that love back because eve...

#5
Underfell - But You Could Never Un...by underfell_owo
Ever since Papyrus joined the Royal Guard, something changed. He started to brutally beat Sans, and he made him call him boss. Papyrus sees Sans as a lazy, pathetic slob...
![Autophobia [ON HOLD] by __APATHETIC](https://img.wattpad.com/cover/218215749-512-k365920.jpg)
#6
Autophobia [ON HOLD]by Underfell Papyrus
"Please Don't Leave Me" His begging voice echoed in the silent house. The lonely house that held only him and him alone.
Autophobia; The fear of being alone...

#7
Don't leave me, brother by Alriselys
Sans cảm thấy tuyệt vọng trước quan hệ của mình và em trai...
Completed

#8
Help this Sickness (A Fellcest fan...by reallygayantisocial
WARNING THIS CONTAINS UNDERFELL FONTCEST AND VERY MATURE CONTENT. PLEASE ONLY CONTINUE IF YOU ARE FINE WITH THESE THINGS AND PLEASE DO NOT SEND ME HATE OF ANY KIND, THAN...

#9
I dunno some Undertale au lemon sh...by PopRocksbnha
This is just some stuff I came up with at night time. By the way all of the submissive are females because I find it harder to write them as males. Don't know why.
![T O M A K E Y O U M I N E [ON HOLD] by __APATHETIC](https://img.wattpad.com/cover/220170989-512-k511112.jpg)
#10
T O M A K E Y O U M I N E [ON H...by Underfell Papyrus
Your everyday depressing fellcest-
"Who Would Ever Love A Worthless Nuisance Like You, Sans?" The younger skeleton spat, glaring down at his chained brother. T...

#11
Fontcestby Storyteller
I LIKE FONTCEST PLEASE DON'T HATE ME
This will include head canons of the brothers and rp

#12
Undertale one-shotsby Inky
Just some random drabbles. I will take requests, but I won't be doing any frans or character x reader/oc.
But I will do almost any other ship, so just request what you w...

#13
Error and Inkby Starling Michales
My first fanfiction with Ink and Error. this will be a multi shippings story. I don't own any of the characters and this is purely for fun. There will however be a sligh...

#14
Fallen Downby GirlInAFandom
((DISCONTINUED))
After Chara erased the timeline, everyone had to go somewhere. That somewhere for Sans just had to be the Underfell universe. The people of snowdin in t...

#15
Don't Know What You Have Till You...by Call_Me_Logan
'I hate you' 'you can't do anything' 'your holding me back' all things said to Sans by the one he loves the most his brother he took his insults, he didn't mind the fact...

#16
Life in the underground by jacksepticeyfan
It starts off as the way you are at home, then a massive twist happens nocking you into the underground. You continue this new place and meet different monsters. But you...

#17
A collection of Undertale one-shotsby Emnashi
A collection of Undertale one-shots I have wrote. Does contain fontcest will not contain sex. Simply some romance, fluff or darker stories.