The Knights of the Raven are a Loyalist Codex Astartes-compliant Space Marine Chapter of an unknown Founding that and a Successor Chapter of the Raven Guard. Very few details of the Knights of the Raven Chapter are known, even within the ranks of the Adeptus Astartes, the Deathwatch, and the Ordos of the Imperial Inquisition. The Chapter's homeworld is the planet Coralax. In recent history, for unknown reasons, the Knights of the Raven "came to blows" with Astartes from the Aurora Chapter; the resulting conflict was apparently ended by Marneus Calgar of the Ultramarines. In penance for shedding the blood of fellow Astartes, they are currently fighting a guerrilla war against the Tyranids of the remaining splinters of Hive Fleet Kraken.