Warhammer 40,000: Dawn of War/Chaos Space Marines

Chaos Lord
Close combat unit that can attach to squads to boost morale.
 * Class: Commander
 * Role: Melee, support

Chaos Sorcerer
Powerful damage and movement restricting special abilities. Can teleport short distances.
 * Class: Commander
 * Role: Support

Heretic
Has the ability to turn health into increased construction power.
 * Class: Infantry
 * Role: Builder unit

Cultist Squad
Weak unit with high numbers useful as a meat shield. Can be upgraded to detect infiltrated units, have plasma guns and Grenade launches.
 * Class: Infantry
 * Role: Anti-infantry, cannon fodder

Chaos Space Marine Squad
Similar to standard Space Marines however tainted by Chaos. Can be upgraded to have heavy bolters and plasma guns.
 * Class: Heavy infantry
 * Role: Versatile

Raptor Squad
Close combat unit capable of short distance flying.
 * Class: Heavy infantry
 * Role: Jump infantry

Horror Squad
Ranged attack daemon summoned from the warp into the map.
 * Class: Infantry
 * Role: Anti-infantry

Possessed Squad
"The ultimate combat unit" with a variety of upgrades.
 * Class: Heavy infantry
 * Role: Melee

Obliterator Squad
A squad of pure destruction that can lay waste to forces by using a variety of weaponry.
 * Class: Heavy infantry
 * Role: Ranged firepower

Khorne Berserker
Fast moving close-combat unit.
 * Class: Heavy infantry
 * Role:

Chaos Rhino
Similar to the Space Marine Rhino.
 * Class: Vehicle
 * Role: Transport

Defiler
Very inaccurate artillery that throws units, strong combat unit effective against most units.
 * Class: Vehicle
 * Role: Melee, artillery

Chaos Predator
Effective against infantry, can be upgraded to be effective against vehicles and buildings.
 * Class: Vehicle
 * Role: Main battle tank

Bloodthirster
Most powerful chaos daemon, can fly short distances.
 * Class: Daemon
 * Role: Melee

Daemon Prince

 * Class: Daemon
 * Role: Melee