Mark Lindsay Chapman

~ as ~

Richard Armour

Susan Blakely

~ as ~

Layla

Lisa Blount

~ as ~

Cindy

Brion James

~ as ~

Alien Leader

Earl Boen

~ as ~

Sid

Geoffrey Lewis

~ as ~

Prof. Alan Jeffries

Catherine Mary Stewart

~ as ~

Angela Taylor

Nicole Eggert

~ as ~

Elyse Jeffries

Paul Brinegar

~ as ~

Pops

Barry Pearl

~ as ~

Eddie