Apollyon the Destroyer
Chaos Lord of the Omega Legion
Apollyon leads the Omega Legion, this is the name that they have taken since their break from the Emperor. They followed Horus because they believed that the Imperium and the Emperor had become corrupt and weak. They believe that power and right are the same. Apollyon has fought in many a Black Crusade over the millennia the Horus Heresy. He has been touched by Khorne and Tzeentch.
If Apollyon is included in your army, he may lead the army in place of a normal Chaos Lord, or he may be taken as an other character.
Weapons: Lightning claw, bolter/flamer combi-weapon, Terminator Armour, Auxiliary Grenade Launcher (allows Apollyon to use frag and krak grenades).