The Season 9 episode, "Plankton's Pet", even showed SpongeBob voluntarily helping out Plankton by not just selecting a pet for adoption, but also searching for it after it goes missing.

When SpongeBob SquarePants's pet snail Gary gets kidnapped by Poseidon and taken to the Lost City of Atlantic City, he and his best friend Patrick Star must go on a rescue mission to save him from ...

The character-driven cartoon chronicles the nautical and often nonsensical adventures of SpongeBob, an incurably optimistic and earnest sea sponge, and his underwater friends. Dwelling a few ...