Jackie Coogan as Dr Aranya

Allan Nixon as Dr. Tucker, camp physician

Richard Travis as Dan Mulcahey, foreman

Lyle Talbot as Narrator (voice)

Paula Hill as Doreen Culbertson

Robert Knapp as Grant Phillips

Tandra Quinn as Tarantella

Chris-Pin Martin as Pepe

Harmon Stevens as Dr. Leland J. Masterson

Nico Lek as Jan van Croft

Kelly Drake as Lost Woman

John Robert Martin as Frank

George Barrows as George

Dolores Fuller as Blonde 'Watcher in the Woods'

Mona McKinnon as Lost Woman

Sherry Moreland as Lost Woman

Katherine Victor as Car-Driver Spider Woman

Samuel Wu as Wu

Margia Dean as Lost Woman

Angelo Rossitto as Dwarf Lab Assistant