George C. Scott

Lt. William 'Bill' Kinderman

Ed Flanders

Father Joseph Kevin Dyer

Brad Dourif

James Venamun / The Gemini Killer

Jason Miller

Father Damien Karras / Patient X

Nicol Williamson

Father Morning

Scott Wilson

Dr. Temple

Nancy Fish

Nurse Allerton

George DiCenzo

Stedman

Don Gordon

Ryan

Lee Richardson

University President