Tim Blaney as Johnny Five (voice)

Fisher Stevens as Ben Jahrvi

Michael McKean as Fred Ritter

Cynthia Gibb as Sandy Banatoni

Jack Weston as Oscar Baldwin

Dee McCafferty as Saunders

David Hemblen as Jones

Don Lake as Manic Mike

Damon D'Oliveira as Bones

Tito Núñez as Zorro

Jason Kuriloff as Lil Man

Robert LaSardo as Spooky

Lili Francks as Officer Mendez

Wayne Best as Officer O'Malley

Gerard Parkes as Priest

Adam Ludwig as Hans de Ruyter

Rex Hagon as Dartmoor

Rummy Bishop as News Vendor

Richard Comar as Mr. Slater

Tony De Santis as Russian Taxi Driver

Eric Keenleyside as Simpson's Truck Driver

Phillip Jarrett as Card Hustler

Jeremy Ratchford as Bill

Kurt Reis as Mr. Arnold

Garry Robbins as Francis

Ric Sarabia as Toy Robot Builder

Barry Flatman as Robotic Company CEO

Jane Schoettle as Robotic Executive

Carlton Watson as Robotic Engineer

Eve Crawford as Federal Judge

Craig Gardner as Art Lover

Micki Moore as Art Lover

Sam Moses as Clothing Store Owner

Norwich Duff as Paramedic

Claudette Roche as Secretary

Frank Adamson as Desk Sergeant

Chris Barker as Bus Driver

Peter Shanne as Entourage Leader

James Killeen as Reporter

Patrick Greenwood as Swat Team Officer

Ally Sheedy as Stephanie Speck (voice)