Chaos si based on four sub-factions in ONE BIG under lead of Archaon everchosen.
Each of the gods of CHAOS has his sub-faction with his chosen:
Khorne — The Blood God
Faction: bloody hand
chosen:
Tzeentch — The Changer of the Ways
Faction: Sith
chosen: darth Nihilus
Nurgle — The Great Lord of Decay
Faction:
chosen:
Slaanesh — The Prince of Excess
Faction: Wraiths
chosen:
Units:
Hero unit:
Archaon everchosen(leader)
darth Nihilus
Fighters:Wraith darth fighter
capital: Wraith hive ship
bloodshed class