Reparto principal

Igor reparto completo

Igor, el ayudante del Dr. Glickenstein decide realizar su propio experimento, buscando ganar la feria de ciencia maligna, y de esa forma convertirse en un científico loco por derecho propio.

Reparto principal

John Cusack

Igor (voice)

Actor

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Myleene Klass

Dr. Holzwurm (voice)

Actor

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Robin Walsh

Dr. Holzwurm's Igor (voice)

Actor

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Matt McKenna

Dr. Herzschlag (voice)

Actor

John Cleese

Dr. Glickenstein (voice)

Actor

Steve Buscemi

Scamper (voice)

Actor

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Sean Hayes

Brain (voice)

Actor

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Eddie Izzard

Dr. Schadenfreude (voice)

Actor

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Jay Leno

King Malbert (voice)

Actor

Jennifer Coolidge

Jaclyn / Heidi (voice)

Actor

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Molly Shannon

Eva (voice)

Actor

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James Lipton

Himself

Actor

Christian Slater

Dr. Schadenfreude's Igor (voice)

Actor

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Arsenio Hall

Carl Cristall (voice)

Actor

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Jess Harnell

Announcer / Royal Guard #2 (voice)

Actor

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Zoë Bright

Blind Woman / Killiseum Fan #1 (voice)

Actor

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Sophia Eraklis

Blind Orphan #1 (voice)

Actor

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A. Cheron Hall

Blind Orphan #2 / Blind Orphan #4 (voice)

Actor

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Alexander Leondis

Blind Orphan #3 (voice)

Actor

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Michael Leondis

Blind Orphan #6 (voice)

Actor

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Nicole Leondis

Blind Orphan #7 (voice)

Actor

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Juliana Leondis

Blind Orphan #5 (voice)

Actor

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Robin Tisserand

Blind Orphan #8 (voice)

Actor

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Paul Vogt

Buzz Offmann (voice)

Actor

Frank Welker

Animals' vocal effects (voice) (uncredited)

Actor