R8 my dudes.
>Black Centipedes
>Claim to be Imperial Fist descendants but shaky records+ unstable gene-seed make that questionable
>Extremely harsh and cruel even by Space Marine Standards, believe that Humanity is inherently weak and corrupt which can only be overcome by extreme suffering.
>Aspirants are trained in pairs who must coexist and train in perfect unity. Prior to becoming Marines they are forced to fight to the death with the winner being seen as 'on the road to purity' The Centipedes will gladly leave civilians to die and will even abandon allies they judge to be weak.
>This has earned them few friends amongst the Imperial Guard.
>The Centipedes took massive losses during the process of becoming Primaris, with a full 1/3 of the chapter perishing including the Chapter Master and multiple Captains
>Currently they can muster four companies worth of marines
>This is seen as a moment of triumph by the Chapter having discarded those incapable of growing further
>The Centipedes are obsessed with collecting relics of the Great Crusade having committed full companies to claiming minor relics such as a non functional Mark II armor set they claim to have been worn by Sigismund.
>Their world, Katla, is a war torn shithole with numerous factions fighting for scant resources. The chapter play them against each other, even sabotaging peace talks to ensure constant conflict.