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1. Public Bookmark *

   The Skeletons NOT in the Closet by Mochimunchies

   Fandoms: Undertale (Video Game)  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • M/M, Multi, Other, F/M
   • Work in Progress

   24 Nov 2025

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans/Sans (Undertale)
   • Sans (Undertale)/Reader
   • Sans Ensemble (Undertale)
   • Sans (Undertale)
   • PaperJam (Undertale)
   • Gradient (Undertale)
   • Goth (Undertale)
   • Reader
   • Dreamtale Sans | Dream/Error Sans (Undertale)
   • Dreamtale Sans | Dream (Undertale)
   • Error Sans (Undertale)
   • One Shot Collection
   • Sub Error Sans (Undertale)
   • Alternate Universe - Undertale Multiverse | UTMV (Undertale)
   • Error Sans/Dreamtale Nightmare Sans (Undertale)
   • Ecto-Genitalia (Undertale)
   • Bad Sans Poly (Undertale) - Freeform
   • Dreamtale Nightmare Sans/Killer Sans/XTale Sans | Cross/Horrortale Sans/Dusttale Sans (Undertale)
   • Killer Sans (Undertale)
   • Xtale Sans | Cross (Undertale)
   • Dusttale Sans (Undertale)
   • Horrortale Sans (Undertale)
   • Dreamtale Nightmare Sans (Undertale)
   • _____tale Sans | Ink (Undertale)
   • _____tale Sans | Ink Being an Idiot (Undertale)
   • Underswap Sans (Undertale)
   • Underfell Sans (Undertale)
   • Canon Sans | Classic Sans (Undertale)
   • Sciencetale Sans | Sci (Undertale)
   • Crack Treated Seriously
   • Error Sans/_____tale Sans | Ink (Undertale)
   • Siren Sans (Undertale)
   • Implied Non-Consensual Body Modification
   • Soulless _____tale Sans | Ink (Undertale)
   • Blood and Violence
   • Possessive Behavior
   • Dreamtale Sans | Dream/_____tale Sans | Ink (Undertale)
   • Goth (Undertale) - Freeform
   • Bad Sanses | Nightmare's Gang (Undertale)
   • Dadmare (Undertale)
   • Parental Dreamtale Nightmare Sans (Undertale)
   • PaperJam (Undertale) - Freeform
   • Gradient (Undertale) - Freeform
   • Dreamtale Sans | Dream/_____tale Sans | Ink/Underswap Sans (Undertale)
   • Error Underswap Sans | Blueberror (Undertale)
   • Yandere Underswap Sans (Undertale)
   • Poor Error Sans (Undertale)
   • Error Sans/Reapertale Sans (Undertale)
   • Sans/Underfell Sans (Undertale)
   • Fatal Error Sans/Reapertale Sans (Undertale)
   • Dreamtale Nightmare Sans/Reader - Freeform

   Summary

   A collection of Undertale UTMV one-shots and small drabbles that I don't want to make entire stories for.

   Language:

   English

   Words:

   155,790

   Chapters:

   40/50

   Comments:

   558

   Kudos:

   1,010

   Bookmarks:

   115

   Hits:

   38,055

   Bookmarked by willIAMff

   07 Apr 2026

2. Public Bookmark 26

   UTMV Headcanons by Mochimunchies

   Fandoms: Undertale (Video Game)  

   • Teen And Up Audiences
   • No Archive Warnings Apply
   • No category
   • Work in Progress

   06 Nov 2025

   Tags

   • No Archive Warnings Apply
   • Sans/Sans (Undertale)
   • Sans Ensemble (Undertale)
   • Underfell Sans (Undertale)
   • Underswap Sans (Undertale)
   • Horrortale Sans (Undertale)
   • Swapfell Sans (Undertale)
   • Killer Sans (Undertale)
   • Dusttale Sans (Undertale)
   • Dreamtale Nightmare Sans (Undertale)
   • Dreamtale Sans | Dream (Undertale)
   • Fresh Sans (Undertale)
   • Error Sans (Undertale)
   • _____tale Sans | Ink (Undertale)
   • Dancetale Sans (Undertale)
   • Farmtale Sans (Undertale)
   • Fluffytale Sans | Ccino (Undertale)
   • Aftertale Geno Sans (Undertale)
   • Reapertale Sans (Undertale)
   • Outertale Sans (Undertale)
   • Underlust Sans (Undertale)
   • Xtale Sans | Cross (Undertale)
   • Science Sans (Undertale) - Freeform
   • Epictale Sans (Undertale)
   • Echotale Sans | G (Undertale)
   • Fellswap Gold Sans (Undertale)
   • Error Sans/_____tale Sans | Ink (Undertale)
   • Bad Sanses | Nightmare's Gang (Undertale)
   • Alternate Universe - Undertale Multiverse | UTMV (Undertale)
   • Headcanon
   • Mental Health Issues
   • Undertale Multiverse Balance Trope
   • Fluff and Angst
   • mentions of dark themes
   • Headcanons are Based Off of Fanon
   • siren au
   • Possessive Behavior
   • Animalistic Sans (Undertale)
   • Mentions of Drowning
   • Mentions of Violence
   • ship kids
   • Not Me Introducing My OCs
   • Fellswap Sans (Undertale)

   Summary

   Just a collection of various general headcanons I have surrounding the Undertale Multiverse.

   Series

   • Part 3 of Headcanon Fics

   Language:

   English

   Words:

   54,043

   Chapters:

   19/30

   Comments:

   64

   Kudos:

   249

   Bookmarks:

   26

   Hits:

   7,191

   Bookmarked by willIAMff

   06 Apr 2026