This creature is green and yellow. He purple ears and glasses. He may be a sea dragon. He is voiced by Maurice LaMarche.
He appeared in the episode "SpongeGuard on Duty" SpongeBob called everyone out of the water. Everyone was wondering what was going on. He tried to make several excuses. Then he said there were sea monsters there. That's when he appeared. The monster made a brief sentance and walked away, slapping SpongeBob with his tail.