Frank Welker
Slimer / Ray Stantz (voice)

Maurice LaMarche
Egon Spengler (voice)

Dave Coulier
Peter Venkman (voice)

Buster Jones
Winston Zeddemore (voice)

Cree Summer
Chilly Cooper (voice)

Kath Soucie
Janine Melnitz (voice)

Jeff Altman
Professor Dweeb (voice)

Charlie Adler
Elizabeth (voice)

Danny Mann
Luigi / Bruiser (voice)

Jeff Marder
Rudy (voice)

Alan Oppenheimer
Goolem (voice) / Morris Grout (voice) / Goolem / Morris Grout (voice)

B.J. Ward
/ Mrs. Pennyworthy (voice)

April Hong
Catherine (voice)

Danny McMurphy
Donald (voice)

Katie Leigh
Jason (voice)

June Foray

Rob Paulsen
Robby (voice)

Lewis Arquette
Zito (voice)

Fay DeWitt