This is from Sigmarxism, so it's kind of shooting fish in a barrel, but this is so cringeworthy I thought I had to share it with you Kiwis.
Headcanon for how each Primarch would react to you coming out as trans.
I think the standout for me is Alpharius and Omegon congratulating you on your ability to blend in with any given population. Because, y'know, nobody can ever tell. Also, Russ using the word 'lad' which I choose to interpret as him deliberately misgendering 'Alice'.
Lion: Executes you for being corrupted by Slaanesh
[redacted] Fine with it
Fulgrim: Fucks you
Perturabo: Executes you for being corrupted by Slaanesh
The Khan: Executes you for being corrupted by Slaanesh
Leman Russ: Executes your entire continent for being corrupted by Slaanesh
Rogal Dorn: Declares Exterminatus on your planet for being corrupted by Slaanesh
Konrad Curze: Lets Sevatar execute you for several weeks for being corrupted by Slaanesh
Sanguinius: Executes you for being corrupted by Slaanesh
Ferrus Manus: Executes you for being corrupted by Slaanesh
[redacted] Massively into it
Angron: Is unaware he executes you for being corrupted by Slaanesh as he is just executing every cunt that day
Guilliman: Executes you for being corrupted by Slaanesh; updates Codex Astartes to confirm immediate execution of all trannies encountered
Mortarion: Executes you for being corrupted by Slaanesh via massive infection of your axewound
Magnus the Red: Executes you for being corrupted by Slaanesh because even mutant sorcerers have standards
Horus: Abaddon executes you for being fucking detestable before Horus can even tell him to do it
Lorgar: Executes you for being a Chaos spawn
Vulkan: Executes you very quickly out of mercy for your obvious suffering due to corruption by Slaanesh
Corax: Executes you silently for being corrupted by Slaanesh
Alpharius Omegon: You are Alpharius. Omegon executes you anyway