Zomboid was a monster that appeared in the cartoon series Mighty Max as one of the show's one-shot villains.
A large, multi-tentacled slug-like creature, the methane-filled Zomboid was living in a cave deep below an African temple and was tending to its brood of Zomboid Parasites. Despite having no visible gender, Virgil repeatedly referred to the Zomboid as a mother, meaning it was likely female.
When Max's mom brought home an African statue from Haiti, she accidentally unleashed several Zomboid Parasites into America. With Virgil's help, Max used a portal to head to Africa and killed the Zomboid to end the plague of zombies that was resulting from the infestation.