The Necron Abattoir is a gigantic vehicle that walks on tentacle-like limbs which also serve as devastating weapons, flaying anything that gets in its path. Scarab Swarms stream from its interior, reducing smaller targets to carcases or wrecks in seconds. It has excellent armour, and the Living Metal special rule, making it incredibly difficult to destroy.
Ethereals are the spiritual leaders of the Tau. An Ethereal that is present on the battlefield inspires the warriors around him to fight even harder for the greater good.
Ork Warbike Outriders are fast moving units with scouting abilities. Their Twin Sawn-off Big Shootas have some short ranged use, but Outriders are better suited to getting up close and personal with their enemies.
Warp Spiders are extremely versatile assault orientated infantry capable of shredding formations of lower armoured troops before a shot is fired in return. A popular tactic is to emerge from Storm Serpent Webway gates and use their considerable assault range to hit unsupported or unprepared enemy targets.
The Leman Russ Demolisher excels at destroying infantry and armour in cover. It is medium ranged, with tough armour, and its secondary weaponry is almost as powerful as its main gun, though slow firing.
Imperial Guard Commissars are responsible for enforcing discipline, and they will stop at nothing to acheive this. Deserters will be shot.
Devastation Class Cruisers are excellent for deploying Chaos units via planetfall. They also have Orbital Bombardment that will destroy large numbers of weaker units, and a Pin-point Attack for obliterating War Engines.
The Keeper of Secrets is a Chaos Greater Daemon that is simultaneously beautiful and grotesque to those who see it. If its enemies are unlucky enough to be captured in its gaze, they’ll be cut down before they know what hit them.