The Crimson Fists is a Loyalist Space Marine Chapter and a Second Founding Successor Chapter of the Imperial Fists Legion. The Crimson Fists until recently was a Chapter on the edge of extinction, its fortress-monastery destroyed and its numbers all but annihilated when the Ork WAAAGH! Snagrod descended on the Loki Sector of Segmentum Tempestus and its Chapter homeworld of Rynn's World in 989.M41.