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1. Dropped into A Grim Universe WHAT IF by Slimalou

   Fandoms: Warhammer 40.000  

   • Explicit
   • Graphic Depictions Of Violence
   • F/M
   • Work in Progress

   16 Sep 2026

   Tags

   • Graphic Depictions Of Violence
   • OC/Primarch(s)
   • Original Male Character(s)
   • The Primarchs (Warhammer 40.000)
   • Lazarus (Dropped into A Grimm Universe)
   • Alternate Universe - Canon Divergence
   • Comedy
   • elements of other universes
   • Attempt at Wholesome
   • Size Difference
   • Rule 63
   • Elements of X-COM
   • One-Shots
   • Alternate Universe - what if

   Summary

   You all know what happened if Lazarus landed on Nostromo, but what if he landed on other planets? Where would the Grim Dark Universe of rule 63 40k take him? Such is the question I wanted to explore in this series of one-shots. Lazarus will be landing on each one of the primarchs' homeworld. Some will be just exploring the first meeting between our lovable MC and the build up of that meeting. Most will be left open ended as I wanted to encourage some discussion in the comments about how one scenario might continue. At the end of the day I mainly did this for fun and wanted to see what you guys think of these possible outcomes as well as give me a chance to play more with the primarchs' character outside the cannon story.

   Language:

   English

   Words:

   23,575

   Chapters:

   4/17

   Comments:

   81

   Kudos:

   128

   Bookmarks:

   33

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   5,579