- Leslie Nielsen
- Richard 'Dick' Dix
- Ophélie Winter
- Cassandra Menage
- Ezio Greggio
- Captain Valentino Di Pasquale
- Peter Egan
- Dr. Griffin Pratt
- Alexandra Kamp
- Dr. Uschi Künstler
- Damien Masson
- Mr. President
- Pierre Edwards
- Lt. Bradford Shitzu
- David Fox
- Secretary Osgood
- Sam Stone
- Police Chief Halverson
- Verona Pooth
- Yetta Pussel
- Michel Perron
- Famous Tenor #1
- Paul Rainville
- Famous Tenor #2
- Yvan Ducharme
- Famous Tenor #3
- Marc Hervieux
- Famous Tenor Voice #1
- Perry Canestrari
- Famous Tenor Voice #2
- Carlos Ruiz
- Famous Tenor Voice #3
- Tommy Schnurmacher
- Conductor
- Alan Shearman
- Security Gendarme
- Teresa Barnwell
- Mrs. President
- David Francis
- Commander Wickernuts
- Una Kay
- Oona Hottenlocker-Wickernuts
- Michele Scarabelli
- Opera House Security Guard
- Mark Stevens
- Teenage Hostage
- Ellen David
- Spaceport Customs Officer
- Armand Laroche
- Backstage Gendarme
- Ima Sudonim
- Ben Hur (gag credit)
- Pierre Lenoir
- Inspector Wazoo
- Richard Jutras
- Wardrobe Dresser
- David Millbern
- Pin Head Alien #1
- Matt Smiley
- Pin Head Alien #2
- Charles Dennis
- Flashback Doctor
- Natalie Gray
- Flashback Mother
- Betsy Soo
- Opera reporter
- Ghandi
- Self
- Robert Suetsugu
- Sumo Wrestler #1
- Reid Asato
- Sumo Wrestler #2
- Luc Campeau
- Theater Manager
- Stéphanie Dumoulin-Shaw
- Shuttle Flight Attendant
- Annabelle Torsein
- Female Prompter
- Charles Papasoff
- Sax Musician
- Jean-Marc Bisson
- Alien Emcee
- Alain Bérard
- Converted Alien
- Caroline André
- Violinist
- Toni Sherwood
- Vegan Night Club Singer
- Mikael Gravel
- Vegan Night Club Singer
- Marianne Farley
- Vegan Night Club Dancer
- Daniel Alvarez
- Vegan Night Club Dancer
- Rachel A. Jeperson
- Vegan Night Club Dancer / Concert Dancer (as Rachel A. Jepersen)
- Christian Vezina
- Vegan Night Club Dancer
- Marion Hinz
- Vegan Night Club Dancer / Concert Dancer
- Noam Alon
- Vegan Night Club Dancer
- Martin Samuel
- Vegan Night Club Dancer
- Jean-Luc Côté
- Concert Dancer
- Don Jordan
- Concert Dancer
- Michael Flatley
- Not In This Movie (gag credit)
- Cindy Davis
- Spaceport Passenger
- Peter Hawkins
- Evil Alien
- Line Pelletier
- Sexy Alien Babe
- Mike Tsar
- Bloated Alien
- Jeffrey Weissman
- Groucho Marx