On screen
Cast
25 credited performers
John Cusack
Igor (voice)
Myleene Klass
Dr. Holzwurm (voice)
Artwork unavailable
Robin Walsh
Dr. Holzwurm's Igor (voice)
Artwork unavailable
Matt McKenna
Dr. Herzschlag (voice)
John Cleese
Dr. Glickenstein (voice)
Steve Buscemi
Scamper (voice)
Sean Hayes
Brain (voice)
Suzy Eddie Izzard
Dr. Schadenfreude (voice)
Jay Leno
King Malbert (voice)
Jennifer Coolidge
Jaclyn / Heidi (voice)
Molly Shannon
Eva (voice)
James Lipton
Himself
Christian Slater
Dr. Schadenfreude's Igor (voice)
Arsenio Hall
Carl Cristall (voice)
Jess Harnell
Announcer / Royal Guard #2 (voice)
Artwork unavailable
Zoë Bright
Blind Woman / Killiseum Fan #1 (voice)
Artwork unavailable
Sophia Eraklis
Blind Orphan #1 (voice)
Artwork unavailable
A. Cheron Hall
Blind Orphan #2 / Blind Orphan #4 (voice)
Artwork unavailable
Alexander Leondis
Blind Orphan #3 (voice)
Artwork unavailable
Michael Leondis
Blind Orphan #6 (voice)
Artwork unavailable
Nicole Leondis
Blind Orphan #7 (voice)
Artwork unavailable
Juliana Leondis
Blind Orphan #5 (voice)
Artwork unavailable
Robin Tisserand
Blind Orphan #8 (voice)
Paul Vogt
Buzz Offmann (voice)
Frank Welker
Animals' vocal effects (voice) (uncredited)