Cactus Beasts were the enemies that were fought by Qwark on Hydrano. They were trying to destroy the dam in Dam's Edge. If they entered the water they grew. Cactus Beasts that wore white shirts were armed with swords, red-shirted ones wielded guns that dealt slight damage while purple-shirted Cactus Beasts wielded a much more powerful gun that dealt a lot of damage.
- Secret Agent Clank (first appearance)