Speed Racer (Japanese 三船剛; Mifune Gō) is the main character of the serialized in print in Shueisha's 1966 Shōnen Book of the same name, and also as such, the main character of the 2008 live-action Warner Bros. film adaptation. He is known for his love of racing and valuing his family. He drives the Mach 5 (as well as other cars, such as the Mach 6 in the movie) and always manages to wind up in extreme danger with either his younger brother or his girlfriend Trixie. Speed is shown to miss his older brother, Rex Racer (secretly known as the Racer X), in both versions. He is portrayed by actor Emile Hirsch in the 2008 film.