The Imperial Praetorians are a Space Marine chapter with a short but valiant history in the Gulf. They played an integral part in breaking the Black Waaagh!, with one of their venerable Dreadnoughts slaying the great Ork Garagrim in single combat.

With a mysterious past, the Imperial Praetorians are unsure of their origins. As such, they have no strict adherence to any particular interpretation of the Codex Astartes, and have become known for effective and unpredictable tactics.