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1. To Protect a Mother by ISHIPALLTHETHINGS91

   Fandoms: Invincible (Cartoon 2021)  

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

   27 Apr 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Debbie Grayson/Mark Grayson | Invincible
   • Debbie Grayson
   • Mark Grayson | Invincible
   • Reluctant Incest
   • viltrumite customs are weird
   • Mother-Son Relationship
   • Incest
   • Parent/Child Incest
   • a one-shot becomes a fic!
   • cause i cant control myself
   • Pining
   • Masturbation
   • brief gore in chapter 4 but its invincible-typical levels
   • Showering Together
   • Dominant Debbie Grayson
   • submissive Mark Grayson
   • although they do switch at times
   • Omegaverse
   • Alpha Mark Grayson
   • Panty Kink
   • Mark's a thief

   Summary

   Viltrumite customs are both exceedingly complicated and exceedingly simple. For example: if a Viltrumite were to claim a mate, then that mate is considered off limits from any other Viltrumite advances, even during times of war. At least according to a certain masked Invincible variant. To protect Debbie, Mark must claim her. It's the only way to keep her safe. They have no choice. Right?

   Language:

   English

   Words:

   45,596

   Chapters:

   10/?

   Comments:

   98

   Kudos:

   264

   Bookmarks:

   54

   Hits:

   15,811