|Japanese Voice Actor||Yasuyuki Kase|
Eiji Kubo (久保 英次 Kubo Eiji?) is the Chief Mechanic of Sidewinder. Kubo appears to have a high amount of knowledge about a car's performance and capabilities as well as race theories. He can make very precise anticipations as he did during Project D races against Team 246.
As seen in the manga, Kubo has been entrusted to analyze and evaluate Project D's weaknesses.
- He owns a car shop.