Altered States

William Hurt

Professor Eddie Jessup

Blair Brown

Emily Jessup

Bob Balaban

Arthur Rosenberg

Charles Haid

Mason Parrish

Thaao Penghlis

Echeverria

Miguel Godreau

Primal Man

Dori Brenner

Sylvia Rosenberg

Peter Brandon

Hobart

Charles White-Eagle

The Brujo

Drew Barrymore

Margaret Jessup

Megan Jeffers

Grace Jessup

Jack Murdock

Hector Orteco

Francis X. McCarthy

Obispo

Deborah Baltzell

Schizophrenic Patient

Evan Richards

Young Rosenberg

Paul Larsson

Charlie Thomas

John Larroquette

X-Ray Technician

George Gaynes

Dr. Wissenschaft