John Altamura was fired during production according to Llyod Kaufman and Ron Fazio for "abusing his authority".
Ron Fazio, who plays an executive of Apokalypse Inc., was originally asked to only to be the Toxic Avenger's distant shot double . However, after Altamura's dismissal, Fazio was asked to play the part and provide the character's voice. Producers kept the scenes with John Altamura, hence both men are credited with the title role.
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