Astral Knights

The Astral Knights was a Loyalist Codex Astartes-compliant Space Marine Chapter from an unknown Founding that was a Successor Chapter of the Imperial Fists. The Astral Knights sacrificed nearly their entire Chapter in 926.M41 to destroy the hideous threat to the Imperium called the World Engine in the Vidar Sector. This Necron weapon was a planet-sized spacecraft, armed with Gauss Projectors capable of scorching entire planets of all life on their surface.