Ross Hagen as Cort Eastman

Jeffrey Combs as Andrew Paris

Dawn Wildsmith as Eddy Colchilde

Robert Quarry as Prof. Strock

Susan Stokey as Denae Chambers

Sybil Danning as Alien Queen

Michelle Bauer as Cave Bunny

Russ Tamblyn as Bill

Michael Sonye as Picnic Guy

Victoria Alexander as Picnic Girl

Tony Lorea as Pedro

Gary J. Levinson as Mutant

Bob Ivy as Mutant

William Smith as Dr. Chambers

Tricia Brown as Cavegirl