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1. Dimensional Decay by Wirehaze

   Fandoms: Rise of the Teenage Mutant Ninja Turtles (Cartoon 2018), Teenage Mutant Ninja Turtles - All Media Types, Teenage Mutant Ninja Turtles (TV 2003), Teenage Mutant Ninja Turtles (IDW Comics), Teenage Mutant Ninja Turtles (Comics)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • No category
   • Work in Progress

   07 Mar 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Donatello & Leonardo & Michelangelo & Raphael (TMNT)
   • Donatello & Leonardo (TMNT)
   • Donatello & Michelangelo (TMNT)
   • Donatello & Raphael (TMNT)
   • Leonardo & Michelangelo (TMNT)
   • Leonardo & Raphael (TMNT)
   • Donatello (TMNT)
   • Leonardo (TMNT)
   • Raphael (TMNT)
   • Michelangelo (TMNT)
   • Renet Tilley
   • Savanti Romero
   • Hurt/Comfort
   • Angst
   • Fluff and Angst
   • Fluff
   • Battle Nexus (TMNT)
   • Memory Loss
   • Alternate Universe - Canon Divergence
   • Multiverse
   • Disaster Twins Donatello and Leonardo (TMNT)
   • Donatello-centric (TMNT)
   • Donatello and Leonardo are Twins (TMNT)
   • Canon Autistic Character
   • Autistic Donatello (TMNT)
   • Identity Crisis
   • Angst with a Happy Ending
   • Isolation
   • Donnie needs a hug - Freeform
   • Existential Crisis
   • Rise Donnie Centric

   Summary

   After being dragged into the Battle Nexus by a man calling himself Mister Ogg, Donnie and his brothers are forced into a rigged fight against the black and white Mirage versions of themselves.

   They lose.

   One turtle must remain behind in a fractured sector of the Nexus to await the next wave of alternates.

   Donnie volunteers.

   Stranded in a grey wasteland stitched together from discarded dimensions, Donnie meets an older Leonardo from another universe who brings dire news, prolonged exposure to this dimension causes aggression, paranoia… and eventually erases memories of the life you came from.

   Names blur. Faces fade. Love becomes a concept without context.

   Language:

   English

   Words:

   18,001

   Chapters:

   7/?

   Comments:

   24

   Kudos:

   39

   Bookmarks:

   5

   Hits:

   378