Lorne Greene

as Ambassador Warren Richards

Tetsuro Tamba

as Prime Minister Yamato

Ralph James

Rhonda Hopkins

as Fran

Ayumi Ishida

as Reiko Abe

John Fujioka

as Narita

Marvin Miller

as Prime Minister Yamato (voice)

Keiju Kobayashi

as Dr. Tadokoro

Shōgo Shimada

as Watari

Hiroshi Fujioka

as Toshio Onodera

Susan Sennett

Philip Roth

Tetsu Nakamura

as Philippines Ambassador

Hideaki Nitani

as Dr. Nakata

Yūsuke Takita

as Assistant Professor Yukinaga

Clifford A. Pellow

Lou Krugman

Nobuo Nakamura

as Japanese Ambassador

Isao Natsuyagi

as Yuki

Roger Corman

as President of the United States (voice)

Joe Dante

Jon Davison