John Brown is a bumbling but well-intentioned security guard who is badly injured in an explosion planned by an evil mastermind. He is taken to a laboratory, where Brenda, a leading robotics surgeon, replaces his damaged limbs with state-of-the-art gadgets and tools. Named "Inspector Gadget" by the press, John -- along with his niece, Penny, and her trusty dog, Brain -- uses his new powers to discover who was behind the explosion.
Matthew Broderick
as John Brown / Inspector Gadget / Robo Gadget
Rupert Everett
as Sanford Scolex / Dr. Claw
Joely Fisher
as Brenda / Robobrenda
Michelle Trachtenberg
as Penny
Andy Dick
as Kramer
Cheri Oteri
as Mayor Wilson
Mike Hagerty
as Sikes
Dabney Coleman
as Chief Quimby
D.L. Hughley
as Gadgetmobile (voice)
René Auberjonois
as Artemus Bradford
Frances Bay
as Thelma
Mr. T
as Himself