J

Originally a battle racer in the Oogami Corps under Dr. Oogami's training, he eventually comes to enjoy regular racing with the Seiba brothers. Consequently, he chooses to leave Oogami Labs, rejecting the win-at-all-costs mentality instilled by Dr. Oogami, and moves in with Dr. Tsuchiya to work as an assistant in his laboratory. This shift also leads to a gradual change in his personality, transforming him from an introvert into a more cheerful boy. Among all the other team members, J is the most skilled technician and mechanic, possessing prior experience with computers and machines gained during his training under Ogami. These abilities are demonstrated on numerous occasions, specifically when he repaired the damaged Tridagger X to repay Ryo for the damage caused in a previous race, when he assisted Go in designing and building the Cyclone Magnum, and when he designed the Proto Saber EVO. He appears to be best friends with Go.
Cars: Proto Saber JB (プロトセイバー), Proto Saber Evolution (プロトセイバーエヴォリューション)
Hobby: Gardening
Hometown: Japan