Sakamoto (坂本, known as Sid in the Tokyopop version) is a rally driver who trains almost exclusively on mountain passes. He has the uncanny ability to take any car and put it in a drift on a mountain pass, usually to figure a car's characteristics and limitations. He was outsourced by Wataru Akiyama, recruited by Nobuhiko of the Northern Saitama Alliance in a desperate measure to defeat Takumi Fujiwara of Project D in a downhill race using a Suzuki Cappuccino, a Kei Car lighter than the Eight-Six. His speciality is driving Front engine, rear drive layout cars.
- In some of the Arcade Stage games and in other media, he is sometimes mistaken to be a Ferrari driver instead of a Rally driver.
- Sakamoto is his surname, and his first name has never been stated.