- Are twisted versions of normal Space Marines who worship the Gods of Chaos.
- Were on the other side of a great Heresy ten thousand years ago.
- Represent the possible fate of the Space Marines who fight them.

Is a secret Chapter made up of Marines seconded from the other Chapters. Is the Space Marine equivalent of the Men in […]
Have been defined in Warhammer 40,000 lore (including the Deathwatch Core Rulebook) for several years as unable to exist due to the […]
Are a venerable Chapter of the Adeptus Astartes. Are seekers of knowledge, yet also taciturn and secretive. Are rumoured to be hiding […]
Are a race of technologically advanced aliens new on the galactic scene. Believe in a Greater Good that all races, including the […]