Dr. Smolder Bravestone
Franklin 'Mouse' Finbar
Professor Sheldon 'Shelly' Oberon
Ruby Roundhouse
Nigel Billingsley
Van Pelt
Jefferson 'Seaplane' McDonough
Young Spencer Gilpin
Young Anthony 'Fridge' Johnson
Young Bethany Walker
Young Martha Kaply
Jogger
Gamer
Spencer's Mom
Fridge's Mom
Girl in Car
Bethany's Mom
Lucinda
Teacher
Coach Webb
Fussfeld
Male Gym Teacher
Principal Bentley
Miss Mathers
Bivouac Biker
Kid at Bazaar
Bread Vendor
Scorpion Recipient
Transportation Shed Guard
Alex Vreeke (uncredited)
Alex's Wife (uncredited)
Jogger's Wife (uncredited)
High School Student (uncredited)
Old Man Vreeke (uncredited)
Skater Punk (uncredited)
Boy #1 (uncredited)
Kid #2 (uncredited)
Kid #3 (uncredited)
Amazon Warrior (uncredited)
Gypsy Cowboy (uncredited)
The Spy (uncredited)
Van Pelt's Henchman (uncredited)
Cute Bazaar Kid (uncredited)
Berber Lady (uncredited)
Bazaar Vendor (uncredited)