Characters played by Matt Kulis
John Griffen
Characters played by Patrick Barnes
Brian
Characters played by Tara Leigh
Sherry Griffen
Characters played by Dianna Flaherty
Kim Griffen
Characters played by Katherine Romaine
Nancy Kane
Characters played by John Marcus Powell
Dr. Viallini
Characters played by Tony Gigante
Mitchell
Characters played by Greg Sullivan
Jarrett
Characters played by George Gerard
Dr. Michael Foster
Characters played by Allen Lewis Rickman
Dr. Elliot Stein
Characters played by Michael D'Andrea
Security Guard
Characters played by Ralph Grimaldi
Viallini's Driver
Characters played by Bob Aaronson
Additional voices
Characters played by Jay Mills
Additional voices
Characters played by Dorielle Rogers
Talos Computer
Characters played by The Great Bokker Dog
Checker