Tetsuro Tamba

Captain Munekata

Hiroshi Fujioka

Geologist Jiro Tate

Yutaka Mizutani

Seajacker Munk

Ryōhei Uchida

Boatswain Nishizawa

Fumio Watanabe

Reporter Tatsuya Iwado

Dai Kanai

Doctor Hatsuyama

K. Amoha

Seajacker Simba

Willie Dorsey

Seajacker Zamba

Ken Sanders

Seajacker Kifal

Tappei Shimokawa

Chief Steward Terada

Mizuho Suzuki

Commander of Defense Katsuragi

Kei Satō

T.V. Director Fukami

Joe Shishido

Chief Engineer Kosai

Peter Graves

Elliott Rhoades

Gigi Perreau

Patricia Haber

Marvin Miller

Seajacker Simba (voice)

Riley Jackson

Dr. Hatsuyama (voice)