Elenco

• 

  John Cusack

  Igor (voice)

• 

  Myleene Klass

  Dr. Holzwurm (voice)

• R

  Robin Walsh

  Dr. Holzwurm's Igor (voice)

• M

  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)