Squidina

Squidina is a character who appears in the episode "Goons on the Moon." She is a purple squid with four legs and two arms (sometime four arms and two legs), and has a single tooth.

Trivia
She is the only character to have "squid" in their name who really is a squid, while other characters like Squidward Tentacles, Squilliam Fancyson, Squilvia, Squidabeth, Squidette and Squidly Tentacles are actually octopuses.