|Family||The Grappler (creation, former son and henchman)|
|Portrayed By||N / A|
In "Gadget Meets the Grappler," Doomkauf created a creature called the Grappler, whom he had commanded to destroy Gadget in exchange for his favorite treats, tidbits. However, since the Grappler was redeemed by Penny, this, in turn, ruined Doomkauf's plan and caused the Grappler to turn on his former master and father.
Routine"Inspector Gadget is always on duty!"
Doomkauf works as a conventioneer and a M.A.D. agent.
And so are you.
- Professor Doomkauf almost stopped penny two times