King Drool

King Drool is the main villain of the Bonk series of video-games and is a large green tyranosaur-type monster who is intent on taking over the world via enslaving other dinosaurs using mind-control helmets that only Bonk can destroy via his seemingly indestructible head.

In the original game (known as Bonk's Adventure) King Drool kidnapped Princess Za and it fell to Bonk to rescue her from the evil king via fighting his way across the world and defeating his mind-controlled minions in the process.

In the second game (known as Bonk's Revenge) King Drool is once again encountered when he literally steals half of the moon, causing Bonk to once again go after him to save the world.