| Actor | Greg Ayres (as Toga Tenkuji), Clint Bickham (as Takasu), Jason Douglas (as Klein Sandman), Marty Fleck (as High Dignitarie, Driver, Additional Voices), Jun Fukuyama (as Toga Tenkuji), Shô Hayami (as Klein Sandman), Jay Hickman (as Alex, Ohtori), Andy McAvin (as President), Hikaru Midorikawa (as Raven), Vic Mignogna (as Raven), Chris Patton (2) (as Eiji Shigure), Ted Pfister (as High Dignitarie, Additional Voices), Rick Piersall (as Researcher), Ken'ichi Suzumura (as Eiji Shigure), John Swasey (as High Dignitarie, Additional Voices), Hideki Tasaka (as Ooshima), Adrian Thomas (as Additional Voices), Isao Yamagishi (as Takasu) |
| Actress | Cynthia Martinez (as Brigitta), Yu Asakawa (as Mizuki Tachibana), Masumi Asano (as Kaori Stephanie), Jessica Boone (as Ena), Shelley Calene-Black (as Tesera), Luci Christian (as Luna Gusuku), Mandy Clark (as Yumi), Kaytha Coker (as Cookie), Tiffany Grant (as Teacher), Hilary Haag (as Anya), Haruna Ikezawa (as Runa Gusuku), Allison Keith (as Leele), Rie Kugimiya (as Brigetta), Motoko Kumai (as Kukki), Houko Kuwashima (as Liru), Kurumi Mamiya (as Anna), Nana Mizuki (as Marinia), Haruko Momoi (as Doria), Mai Nakahara (as Eina), Akane Omae (as Cecil), Naomi Orikasa (as Yumi), Sasha Paysinger (as Cecile), Kimberly Prause (as Ayaka, Zeravire AI), Monica Rial (as Marinia), Allison L. Sumrall (as Additional Voices), Michiko Takahashi (as Chuiru), Tiffany Terrell (as Tulie), Ai Uchikawa (as Tesera), Serena Varghese (as Kaori), Kira Vincent-Davis (as Mizuki Tachibana) |
| Animator | Hitoshi Fukuchi (as mechanical designer (unknown episodes)), Yousuke Kabashima (as mechanical designer (unknown episodes)), Yasuhiro Moriki (as mechanical designer (unknown episodes)), Jun'ichi Takaoka (as character designer (unknown episodes)), Makoto Uno (as character designer (unknown episodes)), Masami Ôbari (as mechanical designer (unknown episodes)), Kunio Ôkawara (as mechanical designer: Gravion (unknown episodes)) |
| Director | Masami Ôbari (as (unknown episodes)) |
| Film Editor | Aya Hida (as (13 episodes, 2002)), Kengo Shigemura (as (unknown episodes)) |
| Producer | John Ledford (as executive producer / producer (13 episodes, 2002)), Toshio Hatakenaka (as (unknown episodes)), Sadakazu Kikuchi (as (unknown episodes)), Yuko Matsuzaki (as (unknown episodes)), Shouji Murahama (as (unknown episodes)), Oshi Yoshinuma (as (unknown episodes)) |
| Production | Kazumitsu Akamatsu (as planner (unknown episodes)), Masami Ôbari (as planner (unknown episodes)) |
| Writer | Yûji Hosono (as (unknown episodes)), Atsuhiro Tomioka (as (unknown episodes)), Kiyoko Yoshimura (as (unknown episodes)) |
| Links | https://www.imdb.com/title/tt0425686/ · https://en.wikipedia.org/wiki/Gravion · https://www.animenewsnetwork.com/encyclopedia/anime.php?id=1835 |
