Mark Blankfield as Dr. Jekyll/Mr. Heyde

Bess Armstrong as Mary Carew

Krista Errickson as Ivy

Tim Thomerson as Dr. Lanyon

Michael McGuire as Dr. Carew

Neil Hunt as Queen

Cassandra Peterson as Busty Nurse

Peter Brocco as Hubert Howes

Noelle North as Female Student

Liz Sheridan as Mrs. Larson

George Wendt as Injured Man

Virginia Wing as Madame Woo Woo

Barret Oliver as Child in Supermarket

Art LaFleur as Clock Repairman

Lin Shaye as Nurse with Telegram

George Chakiris as George Chakiris

Tony Cox as Lawn Jockey #1

Bernadette Birkett as Mrs. Simpson

Jesse D. Goins as Dutch