Marines Immaculate
"BLEACH FOR THE BLEACH GOD! SUDS FOR THE SUD THRONE!" --The Marines Immaculate's typical warcry
The Marines Immaculate are a chaos offshoot of the Reasonable Marines. Where most marines are only OCD about heresy, the Marines Immaculate extended that definition to include all dirt, germs, and grime. This made them turn against the Imperium, as the Emperor, as a rotting corpse, is one of the most disgusting things they could ever think to follow. They do not follow any of the four Great Chaos Gods, instead worshiping one only known as "The Great Clean One."