Hidden characters
Beat: Defeat him in a street race.

Boogie: She can be found at Kibogaoka Hill. Note: Boogie was known as Piranha in Jet Grind Radio and Sugar in Jet Set Radio.

Clutch: Find Clutch through DJ Professor K's instructions.

Combo: Successfully complete his challenges.

Garam: Successfully complete his challenges.

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. Note: Rhyth was known as Mew in Jet Grind Radio and Bis in Jet Set Radio