The Red Wolves is a Loyalist Chapter of Space Marines of unknown origin and Founding. The Red Wolves originally claimed the planet of Bloodfall in the Segmentum Solar as their Chapter homeworld. During the Indomitus Crusade, the Red Wolves were reinforced like many other existing Chapters with Primaris Space Marines of their genetic line. Following the Battle of Baal, the remnants of Hive Fleet Leviathan assaulted Bloodfall. Despite ferocious resistance, the Red Wolves' fortress-monastery ultimately fell to an assault by the Tyranids' Bio-Titans. After taking heavy losses, the surviving Red Wolves managed to evacuate off-world using the vessels of their remaining Chapter fleet.