He appeared as a crudely drawn Patrick Star, but he was much smarter.
He first appeared lying to the Flying Dutchman, making him blame SpongeBob and DoodlePants. But later, SpongeBob and DoodlePants convinced the Flying Dutchman that Doodle Patrick is the liar. He then appears as the boss of the Deep Sea.
He has a very easy strategy. He rolls around the screen and occasionally jumps off the screen and falls down causing a shockwave to roll across the ground on both sides. He also runs around the room. It is very hard to hit him. The only second to hit him is when he is not doing anything.