IGPX: Immortal Grand Prix

IGPX: Immortal Grand Prix (IGPX インモータル・グランプリ) refers to two anime series co-produced simultaneously by Cartoon Network and Production I.G. The first is a "microseries" consisting of five 5-minute episodes, and the second is a 26-episode animated series loosely related to the first.

Koichi Mashimo co-wrote and directed the microseries, while Bee Train Animation and Production I.G animated it, and Bandai Entertainment acted as the North American distributor. The full-length anime series was handled by director and writer Mitsuru Hongo and was animated by Production I.G, with Bee Train returning for in-between animation. Production I.G president Mitsuhisa Ishikawa joined on as producer for the series. It was the first time he had worked on a joint U.S. Japanese production, due to the Pokémon companion franchise.

The series' English dub was produced by Williams Street in Atlanta, Georgia and Bang Zoom! Entertainment in Burbank, California. Both studios collaborated on the English script and casting, Bang Zoom directed and recorded the actors, and Williams Street handled the final mixing for the dub. IGPX was commended for being the first original series on Toonami.

An IGPX video game was released on September 12, 2006, for the PlayStation 2.

The program returned to the Toonami block April 28, 2013 at 2am/1c on Adult Swim.

Main Cast

 * Haley Joel Osment - Takeshi
 * Hynden Walch - Amy
 * Kari Wahlgren - Satomi
 * Kirk Thornton - Mark
 * Lance Henriksen - Andrei
 * Michelle Rodriguez - Liz

Secondary Cast

 * Julie Maddalena - Jesse
 * Karen Strassman - Fantine
 * Kari Wahlgren - Luca
 * Stephanie Sheh - Yuri
 * Steve Blum - Cunningham
 * Steve Staley - River
 * Tom Kenny - Benjamin

Minor Cast

 * Andre Ware - Dimma
 * Barbara Goodson - Misaki (ep7)
 * Brianne Siddall - Johnny
 * Crispin Freeman - Bjorn
 * Dave Mallow - Glass (ep3) MC (ep1), Mechanic B (ep5), Private Investigator (ep8), Weatherman (ep4)
 * Dave Wittenberg - Bullet, Jan, Timma
 * Dorothy Elias-Fahn - Johnny's Sister (ep9)
 * Doug Erholtz - Zanak
 * Erik Davies - Ricardo (ep3)
 * Julie Ann Taylor - Boy A (ep9)
 * Kate Higgins - Amy's Mother (ep4), Jessica
 * Keith Silverstein - Boy B (ep9), Man A (ep11)
 * Kim Strauss - Sir Hamgra
 * Lex Lang - Dew
 * Louise Chamis - Andrei's Wife (ep24)
 * Mark Hamill - Yamma
 * Megan Hollingshead - Coach (ep19), Judy
 * Mela Lee - Fan Girl (ep9), Max
 * Michelle Ruff - Elisa, Narrator (ep4)
 * Mike Forest - Hans (ep7)
 * Stephanie Sheh - Bella
 * Tony Oliver - Mechanic A (ep5), Team Edgeraid Coach (ep6)
 * Wendee Lee - Sola
 * William Knight - Ichi

Additional Voices

 * Dave Wittenberg - Critic A (ep1), Young Andrei
 * Michelle Ruff - Nurse (ep20)
 * Steve Blum - Doctor (ep20)