- Mitsuru Miyamoto
- Â Roger Smith 26 episodes, 1999-2003
- Steve Blum
- Â Roger Smith 26 episodes, 1999-2003
- Akiko Yajima
- Â R. Dorothy Wayneright / ... 25 episodes, 1999-2003
- Motomu Kiyokawa
- Â Norman Burg 25 episodes, 1999-2003
- Tesshô Genda
- Â Dan Dastun 25 episodes, 1999-2003
- Lia Sargent
- Â R. Dorothy Wayneright / ... 25 episodes, 1999-2003
- Peter Lurie
- Â Dan Dastun 25 episodes, 1999-2003
- Emi Shinohara
- Â Angel 19 episodes, 1999-2003
- Wendee Lee
- Â Angel / ... 19 episodes, 1999-2003
- Unshô Ishizuka
- Â Alex Rosewater 16 episodes, 1999-2003
- Michael Forest
- Â Alex Rosewater 16 episodes, 1999-2003
- Alan Oppenheimer
- Â Norman Burg 13 episodes, 2003
- Milton James
- Â Norman Burg 12 episodes, 1999-2000
- Jamieson Price
- Â Big Ear / ... 12 episodes, 1999-2003
- Shinpachi Tsuji
- Â Big Ear 11 episodes, 1999-2003
- Ezra Weisz
- Â Additional Voices / ... 11 episodes, 1999-2003
- Hôchû Ôtsuka
- Â Jason Beck 9 episodes, 1999-2003
- Issei Futamata
- Â Alan Gabriel 8 episodes, 2003
- Bob Buchholz
- Â Jason Beck 9 episodes, 1999-2003
- Crispin Freeman
- Â Alan Gabriel 8 episodes, 2003
- Michael McConnohie
- Â Michael Seebach / ... 8 episodes, 1999-2003
- Katsunosuke Hori
- Â Michael Seebach / ... 7 episodes, 1999-2003
- Gorô Naya
- Â Gordon Rosewater 6 episodes, 2000-2003
- Eiji Yanagisawa
- Â Police / ... 6 episodes, 1999-2003
- William Frederick Knight
- Â Gordon Rosewater 6 episodes, 2000-2003
- Sayuri
- Â Vera Ronstadt / ... 5 episodes, 2003
- Dorothy Elias-Fahn
- Â Louise Ferry 6 episodes, 2000
- Jim Slade
- Â Additional Voices 6 episodes, 2000
- Gary Dubin
- Â Additional Voices / ... 6 episodes, 2000
- Don Fischer
- Â Additional Voices / ... 6 episodes, 2000
- Phil Swell
- Â Additional Voices 6 episodes, 2000
- Matt Adler
- Â Additional Voices 6 episodes, 2000
- Jonathan C. Osborne
- Â Additional Voices 6 episodes, 2000
- Carolyn Hennesy
- Â Vera Ronstadt / ... 5 episodes, 2003
- Matthew Mercer
- Â Additional Voices 6 episodes, 2000
- Mari Devon
- Â Vice President 5 episodes, 1999-2003
- Michelle Ruff
- Â Additional Voices / ... 5 episodes, 1999-2000
- Jessica Gee-George
- Â Additional Voices 5 episodes, 2000
- Steve McGowan
- Â Additional Voices / ... 5 episodes, 1999
- Mona Marshall
- Â Additional Voices / ... 4 episodes, 1999-2000
- Tomomichi Nishimura
- Â Morgan Skyler / ... 4 episodes, 2000-2003
- Tony Oliver
- Â Additional Voices / ... 4 episodes, 2000-2003
- Mike Reynolds
- Â Additional Voices / ... 4 episodes, 1999
- Kevin Brief
- Â Additional Voices 4 episodes, 1999
- David Ellenstein
- Â Additional Voices / ... 4 episodes, 1999
- Mason LaPayote
- Â Additional Voices 4 episodes, 1999
- Katsuhisa Hôki
- Â Commitee Member / ... 3 episodes, 2000-2003
- Mayumi Yanagisawa
- Â Additional Voices / ... 3 episodes, 1999-2000
- Hideto Ebihara
- Â Additional Voices / ... 3 episodes, 1999-2003
- Miho Yoshida
- Â Dancer / ... 3 episodes, 2000-2003
- Edie Mirman
- Â Additional Voices 3 episodes, 2000
- Tom Fahn
- Â Additional Voices / ... 3 episodes, 2000
- Peter Doyle
- Â Senior Officer / ... 3 episodes, 2003
- Michael McCarty
- Â Darres / ... 3 episodes, 1999-2003
- Akio Nojima
- Â R. Instro 2 episodes, 1999-2003
- Mitsuo Senda
- Â Beck's Subordinate / ... 2 episodes, 2000-2003
- Jun'ichi Sugawara
- Â Chief Engineer / ... 2 episodes, 2003
- Kenji Hamada
- Â Beck's Subordinate / ... 2 episodes, 1999
- Hiroyuki Yokoo
- Â Phil / ... 2 episodes, 2003
- Kazuo Oka
- Â Fisherman / ... 2 episodes, 1999
- Kuniko Yoshioka
- Â Announcer 2 episodes, 1999
- Takeharu Ãnishi
- Â Commander 2 episodes, 2003
- Hiroshi Naka
- Â Forensics / ... 2 episodes, 2000-2003
- Naohiro Yamamoto
- Â Additional Voices 2 episodes, 1999
- Eri Miyajima
- Â Additional Voices 2 episodes, 1999
- Shizuka Arai
- Â Additional Voices 2 episodes, 1999
- Kirk Thornton
- Â R. Instro 2 episodes, 1999-2003
- Doug Stone
- Â Additional Voices 2 episodes, 2000
- Dana Craig
- Â Morgan Skyler 2 episodes, 2000
- Karen Strassman
- Â Citizen / ... 2 episodes, 2003
- Ron Roggé
- Â Bank Guard / ... 2 episodes, 2003
- Osamu Saka
- Â Sven Mauriski 1 episode, 1999
- Sakiko Tamagawa
- Â Sybil Rowan 1 episode, 2000
- Ken'ichi Ogata
- Â Miguel Soldano 2 episodes, 1999
- Kôji Ishii
- Â Darres 1 episode, 1999
- Miyuki Ichijô
- Â Melissa Fraser 1 episode, 1999
- Mikio Terashima
- Â Giseng 1 episode, 1999
- Shin'ichirô Miki
- Â Oliver 1 episode, 2000
- Daisuke Sakaguchi
- Â Jeff Meyers 1 episode, 2000
- Takeshi Aono
- Â Mr. Wise 1 episode, 2000
- Tôru Furuya
- Â Bonnie Fraser 1 episode, 1999
- Makoto Nagai
- Â Bartender 1 episode, 1999
- Eiji Maruyama
- Â Old Men 1 episode, 1999
- Toshio Furukawa
- Â Eugene Grant 1 episode, 2000
- Haruna Ikezawa
- Â Laura 1 episode, 2000
- Nobuo Tanaka
- Â R. Frederick O'Reilly 1 episode, 2003
- Keiichi Sonobe
- Â T-Bone 1 episode, 2003
- Michihiro Ikemizu
- Â Rick Fraser 1 episode, 1999
- Chafûrin
- Â Rene Rigetti 1 episode, 1999
- Takkô Ishimori
- Â Timothy Waynewright 1 episode, 1999
- Sho Saito
- Â Old Lady 1 episode, 1999
- Ryôichi Tanaka
- Â Robert Ferry 1 episode, 2000
- Yuzuru Fujimoto
- Â Santa Claus 1 episode, 2000
- Shin Aomori
- Â Oliver Garland 1 episode, 2000
- Jun Ishimaru
- Â Police 1 episode, 2000
- Toshiharu Sakurai
- Â Beck's Subordinate 1 episode, 2000
- Katsuhiko Sasaki
- Â Jim McGowen 1 episode, 2003
- Chikao Ôtsuka
- Â Roscoe Fitzgerald 1 episode, 2003
- Fumihiko Tachiki
- Â Paul Readerman 1 episode, 1999
- Tôru Ôkawa
- Â Thug 1 episode, 1999
- Kazuhiko Kishino
- Â Ed Hillery 1 episode, 1999
- Kôji Tobe
- Â Old Men 1 episode, 1999
- Kyoko Tsuruno
- Â Louise Ferry 1 episode, 2000
- Masaru Matsumoto
- Â Man 1 episode, 2000
- Kaori Mizuhashi
- Â Tami 1 episode, 2003
- Katsumi Suzuki
- Â Legal Adviser 1 episode, 2003
- Toshiko Sawada
- Â Kelly Fitzgerald 1 episode, 2003
- Tatsuyuki Jinnai
- Â Anthony Gauss 1 episode, 1999
- Masaki Aizawa
- Â Commitee Member 1 episode, 2000
- Chie Tsuruno
- Â Pero 1 episode, 2000
- Osamu Hosoi
- Â Legal Adviser 1 episode, 2003
- Sayaka Ôhara
- Â Girl 1 episode, 1999
- Hisao Egawa
- Â Waiter 1 episode, 1999
- Masayuki Nakata
- Â Police 1 episode, 1999
- Takashi Nagasako
- Â Janitor 1 episode, 2000
- Tomoyuki Hatta
- Â Additional Voices 1 episode, 2000
- Toshihide Tsuchiya
- Â Army Police 1 episode, 2003
- Takayuki Fujimoto
- Â Citizen 1 episode, 2003
- Hiroaki Ishikawa
- Â Storekeeper 1 episode, 2003
- Sumako Nomura
- Â Vice President 1 episode, 2003
- Yukari Tamura
- Â Additional Voices 1 episode, 2000
- Eiji Hanawa
- Â Additional Voices 1 episode, 2000
- Sayaka Aida
- Â Child 1 episode, 2000
- Kyôko Minami
- Â Additional Voices 1 episode, 2000
- Fuminori Komatsu
- Â Young Man 1 episode, 2003
- Takuo Kawamura
- Â Citizen 1 episode, 2003
- Fumio Matsuoka
- Â Old Man 1 episode, 2003
- Tony Pope
- Â Giseng 1 episode, 1999
- Isshin Chiba
- Â Police 1 episode, 2000
- Sachi Matsumoto
- Â Additional Voices 1 episode, 2000
- Saori Katô
- Â Additional Voices 1 episode, 2000
- Chizuko Minami
- Â Additional Voices 1 episode, 2000
- Masanobu Kariya
- Â Guard A 1 episode, 2003
- Yumiko Kajiwara
- Â Citizen 1 episode, 2003
- Yoshiko Okamoto
- Â Additional Voices 1 episode, 2000
- Miki Tsuchiya
- Â Citizen 1 episode, 2003
- Fuki Shinomiya
- Â Additional Voices 1 episode, 2000
- Ayaka Yamashita
- Â Citizen 1 episode, 2003
- Yûko Sasamoto
- Â Additional Voices 1 episode, 2000
- Yukie Maeda
- Â Citizen 1 episode, 2003
- Bob Papenbrook
- Â Roscoe Fitzgerald 1 episode, 2003
- Carol Stanzione
- Â Kelly Fitzgerald 1 episode, 2003
- Robert Axelrod
- Â Anthony Gauss 1 episode, 1999
- Steve Cassling
- Â Oliver 1 episode, 2000
- Simon Prescott
- Â Miguel Soldano 2 episodes, 1999
- Kim Strauss
- Â R. Frederick O'Reilly 1 episode, 2003
- Michael Lindsay
- Â Police 1 episode, 2003
- Fred Sanders
- Â Citizen 1 episode, 2003
- Barry Stigler
- Â Paul Readerman 1 episode, 1999
- John Snyder
- Â Party Host 1 episode, 2000
- Eddie Jones
- Â Sam 1 episode, 2003
- Dave Florek
- Â Chief Engineer 1 episode, 2003
- Joshua Seth
- Â Jeff Meyers 1 episode, 2000
- John Rubinstein
- Â Vice President 1 episode, 2003
- Nicholas Guest
- Â Army Police 1 episode, 2003
- Alyss Henderson
- Â Florist 1 episode, 2003
- Dean Michaels
- Â Additional Voices 1 episode, 1999
- Christopher Carroll
- Â Forensics 1 episode, 2000
- Stephen Davies
- Â Jim McGowen 1 episode, 2003
- Gregory White
- Â Storekeeper 1 episode, 2003
- Steven Gilborn
- Â Old Man 1 episode, 2003
- Sherry Lynn
- Â Tami 1 episode, 2003
- Jad Mager
- Â Police 1 episode, 2003
- Susan Hull
- Â Citizen 1 episode, 2003
- Debbie Rothstein
- Â Additional Voices 1 episode, 2000
- Cheryl Montelle
- Â Citizen 1 episode, 2003
- Ethan Thornton
- Â Additional Voices unknown episodes
- Kevin Seymour
- Â Rene Rigetti / ... (uncredited) 3 episodes, 1999-2000
- Steve Kramer
- Â Bonnie Fraser (uncredited) 1 episode, 1999
- Peter Spellos
- Â Rick Fraser (uncredited) 1 episode, 1999
- Rafer Weigel
- Â Police Officer (uncredited) 1 episode, 2003