- Whoopi Goldberg
- Katie Coltrane
- Armin Mueller-Stahl
- Elizar Kane
- Juliet Landau
- Dr. Veronica Shade
- Bud Cort
- Spinner
- Stephen McHattie
- Edge
- George Newbern
- Theodore Rex
- Carol Kane
- Molly Rex
- Richard Roundtree
- Commissioner Lynch
- Jack Riley
- Alaric
- Peter Mackenzie
- Alex Summers
- Joe Dallesandro
- Rogan
- Tony T. Johnson
- Sebastian
- Susie Coelho
- Dr. Armitraj
- Peter Kwong
- Toymaker
- Edith Diaz
- Ella
- Robert Martin Robinson
- Knife
- Dee Booher
- Meanest Woman Truck Driver
- William Boyett
- Desk Sergent
- Marius Mazmanian
- Butler
- Noon Orsatti
- Adam
- Hilary Shepard
- Sarah Jiminez
- Lisa Papatzimas
- New Eden Secretary
- Michael Sharrett
- New Eden Volunteer
- Jan Rabson
- Tina Rex / Voice Performer (voice)
- Charles Chiodo
- Guy in the Bag
- Lynne Larsen
- Reporter #1
- Patricia Healy
- Reporter #2
- Kristen Trucksess
- Reporter #3
- Gregory H. Alpert
- Grid Police Officer #1
- Al Eisenmann
- Grid Police Officer #2
- Clyde Johnson
- Grid Police Officer #3
- Brad Wilson
- Grid Police Officer #4
- Bobby McGee
- Grid Police Rookie #1
- Gregory Synstelien
- Grid Police Rookie #2
- Bruce Lanoil
- Theodore Rex (puppet) / Oliver Rex (puppeteer)
- Terri Hardin
- Molly Rex (puppeteer)
- Michelan Sisti
- Reptilian Reverend (puppeteer) / Ankylosaurus Mom (puppeteer)
- Kevin Carlson
- Ankylosaurus Dad (puppeteer)
- James Murray
- Tina the Waitress (puppeteer)
- Paul Salamoff
- Additional Puppeteer
- Jack Tate
- Additional Puppeteer
- Stephen Chiodo
- Guy in the Bag (puppeteer)
- Dwight Roberts
- Guy in the Bag (puppeteer) / Caterpillar (puppeteer)
- Edward Chiodo
- Caterpillar (puppeteer)
- Pons Maar
- Theodore Rex (performer)
- Tony Sabin Prince
- Molly Rex (performer)
- Hawyard O. Coleman
- Oliver Rex (performer) / Tina (performer)
- Michael Earl
- Reverend (performer)
- Tom Fisher
- Ankylosaurus (performer)
- Rodger Bumpass
- Voice Performer
- Anne Lockhart
- Voice Performer
- Bill Bowles
- Voice Performer
- Mickie McGowan
- Voice Performer
- Jennifer Darling
- Voice Performer
- Patrick Pinney
- Voice Performer
- Denise Dowse
- Voice Performer
- Phil Proctor
- Voice Performer
- Bill Farmer
- Voice Performer
- Sherry Lynn
- Voice Performer
- Todd Babcock
- (uncredited)
- Kenneth Londoner
- Jeff Bacon