Certain conditions must be met so the following characters can be unlocked in Rumble and Dodgeball Modes, as well as their respective entries in the Character Database.

Character	How to unlock
Andy	Complete the Job:"Throwdown Challenge: Dragons"
Boris	Complete the Job "Showdown: Dodgeball"
Crush	Complete the Job "Throwdown Challenge: Thornley"
Demon Lion	Defeat him in Ueno during Story Mode
Gold Lion	In New Game +, Defeat Gold Lion in Akihabara during Story Mode
Hiroshi	Simply watch the beginning cutscene upon starting a New Game
Ivan	Compete the Job "Throwdown Challenge: Partners"
Lee	Beat the game and save after the credits roll
Maezawa	Complete the Job "Stand-In Gladiator 2"
Misuzu	Defeat and Recruit her in Shinjuku during Story Mode
Nizaemon	Complete the Job "Nizaemon Bounty"
Okada	Complete the Job "Stand-In Gladiator"
Randy	Complete the Job :"Throwdown Challenge: Dragons"
Rip	Complete the Job "Jock Bounty"
Rocko	Complete the Job "Throwdown Challenge: Thornley"
Rouge Lion	Defeat her in Shibuya during Story Mode
Sabu	Beat the game and save after the credits roll
Sakata	Defeat Sakata in the intro chapter of Story Mode
Sakyo	Defeat him in Asakusa during Story Mode
Saotome	Complete the Job "Throwdown Challenge: Rivals"
Shinji	Defeat and Recruit him in Yokohama during Story Mode
Silver Lion	Defeat him in Akihabara during Story Mode
Skates	Complete the Job "Get My Mask Back!"
Swole	Complete the Job "Jock Bounty"
Tex	Complete the Job "Throwdown Challenge: Partners"
Tigerclaw	Complete the Job "Throwdown Challenge: Tigers"
Tigerfang	Complete the Job "Throwdown Challenge: Tigers"
Ukyo	Defeat him in Asakusa during Story Mode
Ultra Lion	Defeat him in Shinagawa during Story Mode
Yemi	Complete the Job "Showdown: Dodgeball"