- Megumi Hayashibara
- Â Atsuko 'Nuku Nuku' Natsume 12 episodes, 1998
- Jason Douglas
- Â Professor Higuchi / ... 12 episodes, 1998
- Show Hayami
- Â Dr. Higuchi / ... 12 episodes, 1998
- Allison Keith-Shipp
- Â Atsuko Higuchi / ... 12 episodes, 1998
- Kira Vincent-Davis
- Â Ryunosuke Natsume 12 episodes, 1998
- Kelly Manison
- Â Akiko Natsume 12 episodes, 1998
- Saeko Shimazu
- Â Akiko Natsume 12 episodes, 1998
- Akira Kamiya
- Â Kyuusaku Natsume 11 episodes, 1998
- Andrew Klimko
- Â Kyusaku Natsume 11 episodes, 1998
- Mike Kleinhenz
- Â Executive B 10 episodes, 1998
- Akira Sasanuma
- Â Computer / ... 9 episodes, 1998
- Jun'ichi Sugawara
- Â Director B / ... 9 episodes, 1998
- Jaz McKay
- Â Execuitve C 9 episodes, 1998
- Miguel Gandara
- Â Additional Voices / ... 9 episodes, 1998
- Tiffany Grant
- Â Kyouko Ariyoshi / ... 8 episodes, 1998
- Aya Hisakawa
- Â Arisa Sono 8 episodes, 1998
- Kaytha Coker
- Â Arisa Sono / ... 8 episodes, 1998
- Yasuhiko Kawazu
- Â Director A / ... 8 episodes, 1998
- George Manley
- Â Akiko's Manager / ... 7 episodes, 1998
- Bubba Callahan
- Â Additional Voices 7 episodes, 1998
- Hironori Miyata
- Â Director C / ... 7 episodes, 1998
- Ted Pfister
- Â Executive A 7 episodes, 1998
- Eric Opella
- Â Additional Voices / ... 7 episodes, 1998
- Luci Christian
- Â Momoko Ishiyama / ... 6 episodes, 1998
- Yuri Amano
- Â Momoko Ishiyama 6 episodes, 1998
- Marty Fleck
- Â Executive A / ... 6 episodes, 1998
- Chinami Nishimura
- Â Noriko Ishiyama 6 episodes, 1998
- Jennifer Attaway
- Â Noriko Ishiyama 6 episodes, 1998
- Vic Mignogna
- Â Young President 5 episodes, 1998
- Hideyuki Umezu
- Â Department Head / ... 5 episodes, 1998
- Ken Narita
- Â Juuza Mishima 5 episodes, 1998
- Takuma Suzuki
- Â Commanding Officer / ... 5 episodes, 1998
- Kôichi Nagano
- Â Shimazaki / ... 5 episodes, 1998
- Monica Rial
- Â Additional Voices / ... 4 episodes, 1998
- Jason Konopisos-Alvarez
- Â Additional Voices / ... 4 episodes, 1998
- John Tyson
- Â Additional Voices / ... 4 episodes, 1998
- H.K. Kahng
- Â Shimazaki / ... 4 episodes, 1998
- Sachiko Sugawara
- Â Girl / ... 3 episodes, 1998
- Tonya Metzger
- Â Additional Voices / ... 3 episodes, 1998
- Ayanna Grundy
- Â Additional Voices 3 episodes, 1998
- Chris Patton
- Â Additional Voices / ... 2 episodes, 1998
- Hilary Haag
- Â Additional Voices / ... 2 episodes, 1998
- Isshin Chiba
- Â Branch Office Chief / ... 2 episodes, 1998
- Eriko Kawasaki
- Â Flower-Selling Girl / ... 2 episodes, 1998
- Matt Kelley
- Â Additional Voices / ... 2 episodes, 1998
- Hiroko Takemasa
- Â Aide-de-Camp 2 episodes, 1998
- Sandra Krasa
- Â Adjutant 2 episodes, 1998
- Chô
- Â Bureau Chief 1 episode, 1998
- Kôsuke Toriumi
- Â Computer 1 episode, 1998
- Ken'yû Horiuchi
- Â Ooizumi 1 episode, 1998
- Kyle Jones
- Â Additional Voices 1 episode, 1998
- Kumiko Watanabe
- Â Yuuko 1 episode, 1998
- Michiko Neya
- Â Chouko Izumishikibu 1 episode, 1998
- Sara Gaston
- Â MTV Star - Shuko 1 episode, 1998
- Cynthia Martinez
- Â Yuko 1 episode, 1998
- Tomohisa Asô
- Â Department Head's Assistant 1 episode, 1998
- Kim-Ly Nguyen
- Â Mai Yazawa 1 episode, 1998
- Sami Mikasa
- Â Additional Voices 1 episode, 1998
- Justin Jung
- Â Warehouse Employee 1 episode, 1998
- Kazue Ikura
- Â Ryuunosuke Natsume unknown episodes
- Akiko Hiramatsu
- Â Kyouko Ariyoshi unknown episodes
