Overlord – Gorg
Intergalactic gamblers, the Overlords have been attracted to earth because of the Bot Wars. Eager to test their latest creations far from the gladiatorial fighting pits of their home planet, the Overlords think the experience their progeny will receive fighting the Bots will give them edge in the pits.
If their mutants die on the battlefield then they will simply “requisition” the Bots to the pits instead. After all, the rules say nothing about your fighter having to be organic!