The Emperor's Basilisks are a Space Marine Chapter of unknown founding and origin. While at first the chapter had a rather heroic history, their fate was ultimately sealed within their own flesh and blood, as the chapter was known to be prone to psychic mutations within their ranks. The only known survivors of the now purged chapter are Amanu Ensis and Captain Levigan of the Second Company alongside less than forty of battle-brothers under Levigan's command.