Ben 10
Alien World: Diamondhead
S1 E302:
Petropia is a planet as breathtaking and indestructible as its crystalline inhabitants, the Petropians. Occupied by many factions, a civil war broke out between the Petropians and the war-like Subsapiens from below. Little did they know, a third faction, the Antrosapians, awaited with far more sinister intentions for the kingdom.