|Season 2, Episode 10|
Meet Super G.G.
After Gadget is successfully abducted by M.A.D. scientist Dr. Von Headcase, who intends to brainwash him, Penny spends a week trying to locate him. Having exhausted all her computer resources and knowing that Nozzaire isn't seriously looking for her uncle, she turns to the only person in the world who might be able to help: The now-retired and gadget-phobic Brain.
- It is revealed that Brain became so sick of Gadget endangering him and mistaking him for MAD Agents, that he went to a fishing home and Penny tricked her uncle into thinking Brain died.
- This is Brain's only appearance in the show.