A.ku.mu.: Earn a "Jet" ranking at Fortified Residential Zone.

Beat: Defeat him in a street race.

Boogie: She can be found at Kibogaoka Hill.

Clutch: Follow DJ Professor K's instructions.

Combo: Successfully complete his challenges.

Cube: Defeat the Noise Tanks At Sky-Dinosaurian Square, then go to the bottom of the Sewage Facility and defeat Cube in the City Rush.

Doom Riders: Earn a "Jet" ranking at Dogenzaka Hill.

Garam: Successfully complete his challenges.

Goji Rokkaku: Earn a "Jet" ranking at Rokkaku-Dai Heights.

Immortals: Earn a "Jet" ranking in Skyscraper District and Pharaoh Park.

Jazz: Go to the future site of Rokkaku Expo Stadium. Defeat Jazz at City Rush

Love Shockers: Earn a "Jet" ranking at Hikage Street.

Noise Tank: Earn a "Jet" ranking at Highway Zero.

NT-3000: Earn a "Jet" ranking at Sky-Dinosaurium Square.

Poison Jam: Earn a "Jet" rank in a test run at the Tokyo Underground Sewage Facility and at the bottom of Sewage Facility.

Potts: Earn a "Jet" rank at Kibogaoka Hill.

Rapid 99: Earn a "Jet" rank at 99th Street.

Rhyth: Go to the top of the Poison Jam warehouse in Rokkaku-dai Heights to find her the first time. Follow and find her two more times in the game.

RoBoy: Earn a "Jet" rank at Chou Street.

Soda: Defeat Soda in City Rush at Highway Zero.

Suga: Get 32 spray cans at Chuo Street then jump off of the dinosaur. Suga will be at the bottom of the stairs.

Zero Beat: Earn a "Jet" rank in a test run at Shibuya Terminal.