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1. Oh stars, he’s feral by sillylittlebug

   Fandoms: Undertale (Video Game)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • Gen
   • Work in Progress

   12 Aug 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans Ensemble (Undertale)
   • Dreamtale Nightmare Sans (Undertale)
   • Horrortale Sans (Undertale)
   • Something New Sans | Killer (Undertale)
   • Dusttale Sans (Undertale)
   • Bad Sanses | Nightmare's Gang (Undertale)
   • I'm Bad at Tagging
   • nature-typical violence
   • if you know what i mean
   • Time Travel
   • Honestly forgot about that
   • Crack Treated Seriously
   • Animal Death
   • Semi-Graphic Animal Death
   • I think?
   • Mild Blood
   • Implied/Referenced Child Abuse
   • but like not very
   • Casual Mentions of Death
   • Feral tree child Nightmare
   • my child
   • Killer’s scared of boars now

   Summary

   Unexplainably, Nightmare’s subordinates travel back in time! Oopsies! Was it on purpose in an attempt to discover their mysterious bosses past, did Sci get a little silly, did they see a mysterious machine and go “hmm, I wonder what this does, surely it wont send me conveniently back in time to our boss’ childhood” or can the writer not find a good excuse? I guess we’ll never know!! Either way, they made it there and now they get to witness their boss as a child!
   And he’s a…oh my stars he might be feral actually.

   TLDR: Killer, Dust and Horror travel back in time to Nightmare’s past (post-apple incident) in an au where Nightmare stayed in a forest in Dreamtale.

   This is my first work here! Not the best quality nor story but oh well. I’m very open to feedback! (Just please be gentle—)

   Nightmare!Sans belongs to Jokublog
   Dust/Murder!Sans belongs to Ask-Dusttale
   Something New/Killer!Sans belongs to Rahafwabas
   Horror!Sans belongs to Sour-Apple-Studios
   Undertale belongs to Toby Fox

   Language:

   English

   Words:

   8,634

   Chapters:

   7/?

   Comments:

   64

   Kudos:

   71

   Bookmarks:

   13

   Hits:

   840