The Onklebedonk is a Maxis-made creature, present in the final game. It first appeared in the Spore Creature Creator. Originally, Onklebedonk was a horned slug-like creature.

Onklebedonk are somewhat adept at combat, attacking their preys with a medium-powered bite. They also can charge and stun their preys but only for a really short amount of time.

While socializing, Onklebedonks can sing, but aren't very impressive. They also can charm, but can be easily outsmarted. Onklebedonk was heavily changed from his original version, changing from being a slug to a bipedal, sapient reptillian creature.