- Jôji Nakata
- Â Michael Heartland / ... 26 episodes, 2000-2002
- Sôichirô Hoshi
- Â Ryu Soma / ... 25 episodes, 2000-2001
- Houko Kuwashima
- Â Harriet Bartholomew 25 episodes, 2000-2001
- Sayuri
- Â Lana Ines 24 episodes, 2000-2001
- Yui Horie
- Â Sue Harris 23 episodes, 2000-2001
- Takehito Koyasu
- Â Dan Simmons 22 episodes, 2000-2001
- Kikuko Inoue
- Â Guinevere Green 21 episodes, 2000-2002
- Ayako Kawasumi
- Â Joan 17 episodes, 2000-2001
- Atsuko Enomoto
- Â Scarlet 17 episodes, 2000-2001
- Moyu Arishima
- Â Ai / ... 10 episodes, 2000-2001
- Hiroki Takahashi
- Â Announcement / ... 7 episodes, 2000
- Kazuhiko Kishino
- Â Commodore Wilson 7 episodes, 2000
- Shunsuke Shima
- Â Chairman Makarov / ... 4 episodes, 2000-2001
- Takashi Nagasako
- Â Official B / ... 4 episodes, 2000
- Hiroshi Takemura
- Â Mr. X 4 episodes, 2000
- Chafûrin
- Â Dr. Earnest Noguchi 3 episodes, 2000-2001
- Kôji Haramaki
- Â Guard / ... 3 episodes, 2000-2001
- Akemi Kanda
- Â Operator / ... 3 episodes, 2000-2001
- Akiko Yajima
- Â Kroka Leonov 2 episodes, 2000-2001
- Hidenari Ugaki
- Â Official A 2 episodes, 2000
- Ikuya Sawaki
- Â Hattie's Grandfather / ... 2 episodes, 2000
- Hironori Miyata
- Â Academic A / ... 2 episodes, 2000
- Ayaka Yamashita
- Â Announcer / ... 2 episodes, 2000
- Munehiro Tokita
- Â Research Student / ... 2 episodes, 2000
- Shin'ichirô Miki
- Â Rick 1 episode, 2000
- Ryôtarô Okiayu
- Â Soldier at New Morgue Base 1 episode, 2000
- Jun Fukushima
- Â Operator B 1 episode, 2000
- Mitsuaki Madono
- Â Sheriff 1 episode, 2000
- Takeharu Ãnishi
- Â General 1 episode, 2000
- Hirohiko Kakegawa
- Â Scholar A 1 episode, 2000
- Motomu Kiyokawa
- Â Dr. Stuart 1 episode, 2000
- Ryûji Nakagi
- Â Defense Minister A 1 episode, 2000
- Tomohisa Asô
- Â Officer A 1 episode, 2000
- Masato Hirano
- Â Scholar B 1 episode, 2000
- Yûko Sasamoto
- Â Elaine Simmons 1 episode, 2000
- Yuji Takada
- Â Defense Minster B 1 episode, 2000
- Naoki Bando
- Â Academic B 1 episode, 2000
- Dai Matsumoto
- Â Commander 1 episode, 2000
- Kazuhiro Nakata
- Â Colonel Kilgore 1 episode, 2000
- Kazuo Oka
- Â Mr. Smith 1 episode, 2000
- Sachiko Miki
- Â Mrs. Smith 1 episode, 2000
- Hitoshi Bifu
- Â Official C 1 episode, 2000
- Toshihiko Nakajima
- Â Military Strategist 1 episode, 2000
- Yasuo Muramatsu
- Â Secretary of Defense 1 episode, 2000
- Moriya Endo
- Â Man in Lana's Memories 1 episode, 2000
- Yuki Makishima
- Â Violetta 1 episode, 2000
- Hiroomi Sugino
- Â Politician B 1 episode, 2000
- Yukimasa Natori
- Â Scholar C 1 episode, 2000
- Kazuhiko Nishimatsu
- Â Officer B 1 episode, 2000
- Takehiro Murozono
- Â Aide 1 episode, 2000
- Rin Mizuhara
- Â Miss Stacey 1 episode, 2001
- Minoru Inaba
- Â Warden 1 episode, 2001
- Crispin Freeman
- Â First Lt. Dan Simmons (2000) / ... unknown episodes
- Mary Elizabeth McGlynn
- Â Apartment Super / ... unknown episodes
- Michelle Ruff
- Â Funeral Operator / ... unknown episodes
- Jamieson Price
- Â Base Alert / ... unknown episodes
- Michael McConnohie
- Â Dignitary A / ... unknown episodes
- Steve Kramer
- Â Army Official A / ... unknown episodes
- Tony Oliver
- Â Air Force Official B (2000) / ... unknown episodes
- Philece Sampler
- Â Ai / ... unknown episodes
- Steve Staley
- Â Second Lt. Ryu Soma (2000) / ... unknown episodes
- Tom Wyner
- Â Grandpa (2000) / ... unknown episodes
- Julie Ann Taylor
- Â Amian (2000) / ... unknown episodes
- Dave Mallow
- Â Additional Voices (2000) / ... unknown episodes
- Simon Prescott
- Â Air Force Official A / ... unknown episodes
- Lara Jill Miller
- Â Second Lt. Sue Harris unknown episodes
- Beau Billingslea
- Â Captain Michael Heartland unknown episodes
- Wendee Lee
- Â Joan unknown episodes
- Lex Lang
- Â Frank unknown episodes
- Steve Prince
- Â Lab Assistant B unknown episodes
- Dave Wittenberg
- Â Sheriff unknown episodes
- Paul St. Peter
- Â Morgue Officer unknown episodes
- Sandy Fox
- Â Harriet 'Hattie' Bartholomew unknown episodes
- Dorothy Elias-Fahn
- Â Maki Agata unknown episodes
- Steve Apostolina
- Â Army Official B unknown episodes
- Doug Stone
- Â Dr. Ernest Noguchi unknown episodes
- Tony Pope
- Â Official unknown episodes
- Richard Cansino
- Â Mr. X unknown episodes
- Melodee Spevack
- Â Commander Lana Ines unknown episodes
- Lynn Fischer
- Â P.A., Kroka Leonov unknown episodes
- Paula Mattioli Walker
- Â First Lt Guinevere Green unknown episodes
