Keiko Aizawa as Ray's Mother (voice)

Aiko Hibi as Thomas (voice)

Manami Konishi as Scarlett O'Hara St. Jones (voice)

Anne Suzuki as James Ray Steam (voice)

Sanae Kobayashi as Emma (voice)

Katsuo Nakamura as Dr. Lloyd Steam (voice)

Masane Tsukayama as Dr. Edward 'Eddy' Steam (voice)

Satoru Sato as Archibald Simon (voice)

Susumu Terajima as Alfred Smith (voice)

Kiyoshi Kodama as Robert Stephenson (voice)

Tetsu Inada as Jason (voice)

Ikki Sawamura as David (voice)

Osamu Saka as The Admiral (voice)