- Lorne Greene
- Ambassador Warren Richards
- Keiju Kobayashi
- Dr. Tadokoro (D-1 Project Leader)
- Rhonda Hopkins
- Fran
- Hiroshi Fujioka
- Toshio Onodera (Submarine Wadatsumi Pilot)
- Tetsurô Tanba
- Prime Minister Yamamoto
- Ayumi Ishida
- Reiko Abe
- Shôgo Shimada
- Watari (Political Fixer)
- John Fujioka
- Narita
- Andrew Hughes
- Australian Prime Minister
- Nobuo Nakamura
- Japanese Ambassador to Australia
- Haruo Nakajima
- Prime Minister's Chauffeur
- Joe Dante
- (US version)
- Susan Sennett
- (US version)
- Hideaki Nitani
- Dr.Nakata (Cognitive Science D-2 Project Leader)
- Isao Natsuyagi
- Yuuki
- Clifford A. Pellow
- (US version)
- Yûsuke Takita
- Assistant Professor Yukinaga (Geophysics)
- Philip Roth
- (US version)
- Tetsu Nakamura
- Philippines Ambassador to United Nations
- Eisaburo Komatsu
- D-1 Headquarters Staff
- Marvin Miller
- (US version)
- Kunio Murai
- Kataoka (sdf technical research labo)
- Tadao Nakamaru
- Kuni-eda (Intelligence Bureau)
- Ralph James
- (US version)
- Jacques Enghien
- UN Commissioner
- Franz Gruber
- United Nations Committee member
- Yûzô Hayakawa
- SDF General
- Toshio Hosokawa
- Chief Secretary
- Tetsuya Kaji
- Oceanographer
- Kazuo Katô
- Mimura
- Shigeo Katô
- Resident fleeing in the fire
- Sakyô Komatsu
- Man in first meeting with Onodera and Yoshimura
- Akio Kusama
- Government Official
- Shigeru Kôyama
- Yoshimura
- Kanta Mori
- Defence Minister
- Akira Nagoya
- D-2 Security
- Katsurô Onoue
- (as Katsuro Onoue)
- Henry Pan
- Dr. Eugene Cox
- Charles Seams
- Eugene Cox
- Mizuho Suzuki
- Science Minister
- Masaya Takahashi
- Professor Yamashiro
- Roger Wood
- Australian Official
- Osman Yusuf
- Reporter
