Emile Hirsch Speed Racer Christina Ricci Trixie John Goodman Pops Racer Susan Sarandon Mom Racer Matthew Fox Racer X Benno Fürmann Inspector Detector Hiroyuki Sanada Mr. Musha Rain Taejo Togokahn Richard Roundtree Ben Burns Karl Yune Taejo Body Guard Ariel Winter Young Trixie Roger Allam Royalton Paulie Litt Spritle Racer Kick Gurry Sparky John Benfield Cruncher Block Christian Oliver Snake Oiler Ralph Herforth Cannonball Taylor Scott Porter Rex Racer Nan Yu Horuko Togokahn Nayo Wallace Minx Melvil Poupaud Johnny "Goodboy" Jones Ramon Tikaram Casa Christo Announcer Ben Miles Cass Jones Cosma Shiva Hagen Gennie Moritz Bleibtreu Grey Ghost Nicholas Elia Young Speed Racer Harvey Friedman Harold Ledermann Announcer Sadao Ueda Japanese Announcer Valery Tscheplanowa Russian Announcer Vinzenz Kiefer Crew Chief/Sempre Fi-Ber Driver Ricky Watson Race Commentator Brandon Robinson Big Mouth L. Trey Wilson Press Man Lauren Blake Flight Attendant Waldemar Kobus Vinny - Cruncher Thug Max Hopp Cruncher Thug Julie T. Wallace Truck Driver Art LaFleur Fuji Announcer Peter Navy Tuiasosopo Fuji Announcer Jana Pallaske Delila Werner Daehn Sempre Fi-Ber Leader Leila Rozario Hydro-Cell Driver Togo Igawa Mr. Togokahn Anatole Taubman Fuji Reporter Megan Gay Senior Race Official Ashley Walters Prince Kabala Ill-Young Kim Korean Announcer Oscar Ortega Sánchez Spanish Announcer Fang Yu Chinese Announcer Narges Rashidi Persian Announcer Emile Hirsch Speed Racer Christina Ricci Trixie John Goodman Pops Racer Susan Sarandon Mom Racer Matthew Fox Racer X Benno Fürmann Inspector Detector Hiroyuki Sanada Mr. Musha Rain Taejo Togokahn Richard Roundtree Ben Burns Karl Yune Taejo Body Guard Ariel Winter Young Trixie Roger Allam Royalton Paulie Litt Spritle Racer Kick Gurry Sparky John Benfield Cruncher Block Christian Oliver Snake Oiler Ralph Herforth Cannonball Taylor Scott Porter Rex Racer Nan Yu Horuko Togokahn Nayo Wallace Minx Melvil Poupaud Johnny "Goodboy" Jones Ramon Tikaram Casa Christo Announcer Ben Miles Cass Jones Cosma Shiva Hagen Gennie Moritz Bleibtreu Grey Ghost Nicholas Elia Young Speed Racer Harvey Friedman Harold Ledermann Announcer Sadao Ueda Japanese Announcer Valery Tscheplanowa Russian Announcer Vinzenz Kiefer Crew Chief/Sempre Fi-Ber Driver Ricky Watson Race Commentator Brandon Robinson Big Mouth L. Trey Wilson Press Man Lauren Blake Flight Attendant Waldemar Kobus Vinny - Cruncher Thug Max Hopp Cruncher Thug Julie T. Wallace Truck Driver Art LaFleur Fuji Announcer Peter Navy Tuiasosopo Fuji Announcer Jana Pallaske Delila Werner Daehn Sempre Fi-Ber Leader Leila Rozario Hydro-Cell Driver Togo Igawa Mr. Togokahn Anatole Taubman Fuji Reporter Frank Witter Security Official Megan Gay Senior Race Official Joe Mazza Nitro Ashley Walters Prince Kabala Ill-Young Kim Korean Announcer Oscar Ortega Sánchez Spanish Announcer Fang Yu Chinese Announcer Narges Rashidi Persian Announcer