Gorilla King first appeared in "The Strongest Punch and Kick" alongside Kangaroo King. He is the ruler of the gorillas, though no other gorillas have appeared. He and Kangaroo King can combine into Gorillaroo by putting Gorilla King's small feet into Kangaroo King's pouch and having Kangaroo King hold onto Gorilla King's shoulders.
Gorillaroo is a formation made when Gorilla King hops in Kangaroo King's pouch. The Gorillaroo has the strongest punch and kick in Hidden Kingdom.