Henry Hite as Frank Douglas as a Monster

Phil Morton as Col. Steve Connors

Lois Brooks as Dr. Nora Kramer (unconfirmed)

Rork Stevens as

Robert Simons as

Peter M. Thompson as Dr. Chris Manning

June Travis as Ruth

George Perry as

Aviva Crane as Stranded Motorist

Stu Taylor as Kelly, the truck driver

Barry Hopkins as

Del Clark as

Art Scott as

Leonard Holstein as

Dean Tompis as

Jim Bassler as

Rick Paul as

Lorri Perry as Girl at Dance

Bill Rebane as Narrator / Boy at Dance