Urnie
Character
Urnie is a sea urchin who appears in the episode "Prickly Pests."
Description
Urnie is a spiked dark purple sea urchin, much like others of his species. He also has a mouth.
Role in episode
Narlene puts Urnie in SpongeBob's pants as a prank. SpongeBob and Patrick decide to keep him as a pet, and name him Urnie. Later that night, Urnie brings in his urchin friends to have a party. Mr. Krabs comes by and all the urchins hide. Then, the urchins sneak out and invade the other cabins. At the end of the episode, when the urchins have taken over the camp, he stars in his own theme song.