It is a huge slug-like monster with dark-green skin, red spots, six yellow eyes, three fingers with sharp fingernails on its hands, six tentacles for legs, spikes on his back, a mouth on each palm of his hands, a long tail with a stinger, pointy teeth, and light-green fins.
The monster first appears when it started attacking everyone in the Krusty Krab after it was blown away from a rip current. SpongeBob attempted to make Squidward fight the monster, but Squidward ended up getting eaten instead. However, after convincing Mr. Krabs to resume his duties as captain, Mr. Krabs fought the monster and made him spit Squidward out. The monster was defeated when Mr. Krabs sent it colliding with a boulder and breaks into tiny monsters. The tiny monsters then scatter away, never to be seen again.