Go is the second of the two title characters. He is Retsu's younger brother by one year, and he is in the fourth grade. Go is rash, impulsive, careless, impatient, and brash. He is usually seen wearing goggles, but they are on his forehead most of the time as opposed to covering his eyes. His primary color is blue, which is the color of his hair, eyes, gloves, and boots, as well as his cars.

* Cars: Magnum Saber (マグナムセイバー Magunamu Seibā), Victory Magnum (ビクトリーマグナム Bikutorī Magunamu), Cyclone Magnum (サイクロンマグナム Saikuron Magunamu), Beat Magnum (ビートマグナム Bīto Magunamu), Lightning Magnum (ライトニングマグナム Raitoningu Magunamu)and the latest,Bison Magnum.
* Birthday: August 1
* Blood type: O
* Height: 120 cm (roughly 3'11")
* Weight: 25 kg (roughly 55 pounds)
* Hobby: Manga, video games
* Hometown: Japan