- Melinda Wood Allen
- (voice)
- Shintarô Asanuma
- Ryota Sudô
- Chris Ayres
- Bacillus
- Tia Lynn Ballard
- Kanae Kitamura
- Z. Charles Bolton
- Masayuki Hazawa
- Anthony Bowling
- Ochikoshi
- Chris Burnett
- Kazuyoshi Chigira
- Chris Cason
- Masakubo
- Saeko Chiba
- Birdy Cephon Altera
- Luci Christian
- Birdy Cephon Altera
- Colleen Clinkenbeard
- Kaori Sanada
- Hilary Couch
- (voice)
- Cynthia Cranz
- (voice)
- Duane Deering
- (voice)
- Jessica Foster
- (voice)
- Scott Freeman
- (voice)
- Cris George
- Yamamoto
- Jessie James Grelle
- (voice) (as Josh Grelle)
- Jason Grundy
- (voice)
- Todd Haberkorn
- Shyamalan
- Clarine Harp
- Marionette
- Susan Huber
- Additional Voices
- Miyu Irino
- Tsutomu Senkawa
- Kanae Itô
- Natsumi Hayamiya
- Nobuaki Kanemitsu
- Boss
- Ayako Kawasumi
- Shoko Kagami
- Minako Kotobuki
- Kanae Kitamura
- Keith Kubal
- Additional Voices
- Cherami Leigh
- Natsumi
- Yasuhiro Mamiya
- Producer
- Jamie Marchi
- Hazumi Senkawa
- Brian Mathis
- (voice)
- Masaya Matsukaze
- Nataru
- Robert McCollum
- Muroto
- Joel McDonald
- (voice)
- Kiyoko Miyazawa
- Nakasugi's Auntie
- Rin Mizuhara
- Irma
- Kaori Nazuka
- Capella Titis
- Trina Nishimura
- Capella Titis
- Kazuyuki Okitsu
- Sidekick
- Brina Palencia
- Sayaka Nakasugi
- Justin Pate
- (voice)
- Ben Phillips
- (voice)
- Newton Pittman
- Gomez
- Wendy Powell
- Irma
- Monica Rial
- (voice)
- Maaya Sakamoto
- Sayaka Nakasugi
- Lindsay Seidel
- (voice)
- Ryôko Shiraishi
- Kazuyoshi Chigira
- Ian Sinclair
- Ryota Sudô
- Micah Solusod
- Tsutomu Senkawa
- Sonny Strait
- Quekku Gini
- John Swasey
- Geega
- Motoki Takagi
- Masayuki Hazawa
- J. Michael Tatum
- Tuto
- Alexis Tipton
- (voice)
- Dave Trosko
- (voice)
- Eric Vale
- Nataru
- Maxey Whitehead
- Shoko Kagami
- Stephanie Young
- Nechla Geeze
- Ryôka Yuzuki
- Nechla Geeze
- Sayaka Ôhara
- Kaori Sanada
- Takashi Ôhara
- Masakubo
