Freakazoid! S02 E10 Freak-a-Panel / Tomb of Invisibo

Freak-a-Panel: While on the trail of Cave Guy, Freakazoid finds himself at a sci-fi convention and despite the fact that everyone is in costume, he needs to find the real Cave Guy and get out. Tomb of Invisibo: An invisible villain from ancient Egypt has been released, and is causing havoc throughout the world.