Characters played by Frank Welker
Slimer
Elizabeth
Fred
Manx
Bruiser
Ray Stantz
Frogs
Gopher
Mayor Lenny Clotch
Monkey
Morty
Narrator
Pigeon
Robin Leach
Robot
Rufus
Scareface
Characters played by Jeff Altman
Professor Norman Dweeb
Prof. Dweeb
Characters played by Dave Coulier
Peter Venkman
Characters played by Danny Mann
Bud
Luigi
Characters played by Cree Summer
Chilly Cooper
Head Nurse
Characters played by Maurice LaMarche
Egon Spengler
Characters played by Charlie Adler
Rafael
Characters played by Buster Jones
Winston Zeddemore
Characters played by Jeff Marder
Rudy
Characters played by Alan Oppenheimer
Goolem
Morris P. Grout
Characters played by Kath Soucie
Janine Melnitz
Characters played by Fay DeWitt
Mrs. Van Huego
Characters played by June Foray
Mrs. Dweeb
Characters played by April Hong
Catherine
Characters played by Katie Leigh
Jason
Characters played by Danny McMurphy
Donald
Characters played by Rob Paulsen
Robby