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1. Thragg x F!Reader (Mark Grayson’s Twin AU) by Babsabelle

   Fandoms: Invincible (Cartoon 2021), Invincible (Image Comics)  

   • Mature
   • Creator Chose Not To Use Archive Warnings, Graphic Depictions Of Violence
   • F/M
   • Work in Progress

   29 Jun 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Graphic Depictions Of Violence
   • Thragg (Invincible)/Reader
   • Thragg (Invincible) & Reader
   • Atom Eve | Eve Wilkins/Mark Grayson | Invincible
   • Debbie Grayson/Omni-Man | Nolan Grayson
   • Thragg (Invincible)
   • Mark Grayson | Invincible
   • Omni-Man | Nolan Grayson
   • Kid Omni-Man | Oliver Grayson
   • Debbie Grayson
   • Atom Eve | Eve Wilkins
   • Paul the Real Estate Agent (Invincible)
   • William Clockwell
   • Rick Sheridan
   • Kregg (Invincible)
   • Lucan (Invincible)
   • Anissa (Invincible)
   • Argall (Invincible)
   • Cecil Stedman
   • Donald Ferguson
   • Reader
   • Reader-Insert
   • No Use of Y/N for Reader-Insert
   • Female Reader-Insert
   • Chubby Reader-Insert
   • grayson reader
   • Reader Is A Grayson
   • mark graysons twin sister
   • Twin AU
   • Alternate Universe
   • Invincible (Cartoon 2021) Season 4 Spoilers
   • Invincible (Cartoon 2021) Season 4
   • Post-Traumatic Stress Disorder - PTSD
   • Anxiety
   • Depression
   • Alcohol
   • Smoking
   • Stalking
   • Blood and Gore
   • Violence
   • Voyeurism
   • Family Fluff
   • Romantic Fluff
   • Fluff and Angst
   • Angst
   • Fluff and Smut
   • Eventual Smut
   • Smut
   • Vaginal Sex
   • Rough Sex
   • Semi-Public Sex
   • Oral Sex
   • Penis in Vagina Sex
   • Breeding Kink
   • Breeding
   • Light Masochism
   • Light Sadism
   • Implied/Referenced Abortion
   • Implied/Referenced Cheating
   • Implied/Referenced Abuse
   • Dating
   • Slow Burn
   • Slow Build
   • Warnings May Change

   Summary

   It has been months since your father and brother's left for an intergalactic war. Your twin brother Mark who has always been by your side left in a hurry with your father, as you were powerless you remained on Earth with Debbie and Eve. Forced to continue on your daily lives whilst grappling with the fear they may never return.
   Thragg has been staking out Earth for some time, his soldiers infiltrating human society with ease, he decides it is only right he contribute to their cause. He decides to base his mission near where Mark and Nolan are suspected to live, in order to keep an eye on them, but little does he know how close he will end up to them.

   Language:

   English

   Words:

   14,519

   Chapters:

   7/?

   Comments:

   38

   Kudos:

   163

   Bookmarks:

   26

   Hits:

   2,444