A monstrous ghost housed in the Containment Unit manages to free himself, prompting a frantic Slimer to enlist the help of the Junior Ghostbusters.

Frank Welker
Slimer / Ray Stantz (voice)

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Maurice LaMarche
Egon Spengler (voice)

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Dave Coulier
Peter Venkman (voice)

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Buster Jones
Winston Zeddemore (voice)

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Cree Summer
Chilly Cooper (voice)

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Kath Soucie
Janine Melnitz (voice)

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Jeff Altman
Professor Dweeb (voice)

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Charlie Adler
Elizabeth (voice)

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Danny Mann
Luigi / Bruiser (voice)

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Guest stars