Come to the grim future! We got;
* the Adeptes Tormenti Pabulum, previously known as the Imperial Guard. Legions of unremarkable dudes just like you! Only with tanks! And not quite enough air support!
* the robed Adeptes Constanter Fractis Machinis. If you’ve ever thought “Makitas are cool, but what if they doubled as toasters and also replaced your head” this is your faction!
* the Space Marines or Adeptes Minima Iratus Capitibus, known for facing battle without helmets!
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But there are also aliens like the Queblari, or “Space Keebs,” whose civilization has been scattered throughout the stars since That One Time At Pride. They bring Snap-Krakul Andpop, their dread bloody handed avatar, into your morning.
@Leucrotta Reminds me of Bill Levy's Deep Sleep ttrpg and the cults that arose after the Million Missile War, like the Krokerites, ritual gourmet cannibals who worshiped the Holy Book of Beti.