Dr. Noah Faulkner
Olivia Biggs
Mimi Simkins
T.C. Romulus
Dr. Petra von Kant
Bud Macintosh
Doyle Johnson
Monique (as Joey Adams)
Jen
Doyle's Mother
Young Doyle
Young Bud
William Leaky
Guard
Screamer
Reporter Joachim West
Russell
Prof. Bloom
Denise
Roach
Parker
Trent
Tenacious D
Guy
Drummer (as Loomis)
Singer
Guitarist
Bassist
Partier
Bio-Dome Technician
Anchor Aries West
Vigilante
Cmdr. Gates, SWAT Team
Assistant
SWAT Officer
Narrator
Axl
Woman in Bandstand
Kid Tourist
Teacher (uncredited)
Woman in Crowd (uncredited)
Partier (uncredited)
Scientist (uncredited)
Party Guest (uncredited)
Congo Dancer (uncredited)
Dancing Guy w / Red Beret (uncredited)