Horus
PridefulRuthlessAmbitiousCharismatic
Horus Lupercal, one of the 20 genetically-engineered Primarchs created by the Emperor of Mankind, was the Warmaster of the Imperium and the master of the mighty Sons of Horus Legion. However, Horus was corrupted by the powers of Chaos, leading him to betray the Imperium and plunge the galaxy into the cataclysmic Horus Heresy.