>>2368588This is what happens when you pump gangster psychotic violent adolescents from the scum of the galaxy, make them fight to death, get the survivors, plant them with 21 extra organs, 10 of which focus on body/muscle/bones/tissue growth (and one of them literally makes them spit acid), then train then in combat for 16 hours a day, then clad them in ceramite tank grade armor capable of shrugging off rockets, and give them huge machine guns which fire mini explosive shells. You get the Astartes, the Emperor's finest.