The Catulan Reavers are black armoured Sons of Horus Veterans from the late Heresy era. They are armed with a variety of melee and pistol weapons and are deployed to hunt down and destroy enemy command structures. I see them as a pre-cursor to the Chaos Marines of the 41st Millenium and took influences from these to paint them. They are marvellous sculpts to work with and I really enjoyed them. I hope you do too.