The Shadow Wolves was a Codex Astartes-compliant, Loyalist Space Marine Chapter derived from the Imperial Fists' gene-seed. Created during an unknown Founding, these scions of Rogal Dorn were known to be a zealous and faithful Chapter by reputation. They fought for the honour of the Emperor of Mankind for thousands of Terran years, until they met their ultimate fate at the hands of a Tyranid splinter fleet in 987.M41 when their homeworld of Varadon was overrun by the xenos swarms. Even though the Chapter is officially considered extinct, a strike-force of Shadow Wolves was spotted on Cadia in 999.M41, fighting Abaddon the Despoiler's Forces of Chaos during the 13th Black Crusade.