Bill Murray

Peter Venkman

Dan Aykroyd

Ray Stantz

Sigourney Weaver

Dana Barrett

Harold Ramis

Dr. Egon Spengler

Rick Moranis

Louis Tully

Ernie Hudson

Winston Zeddemore

Annie Potts

Janine Melnitz

Peter MacNicol

Dr. Janosz Poha

Harris Yulin

Judge Wexler

David Margulies

Mayor Lenny

Kurt Fuller

Jack Hardemeyer

Janet Margolin

The Prosecutor

Wilhelm von Homburg

Vigo

William T. Deutschendorf

Baby Oscar

Henry J. Deutschendorf II

Baby Oscar