Bonus level
Obtain a ranking of "Fever Time" in each level to unlock the Pander bonus level.

Play as Columbo
Complete the game with Shorty.

Play as ChiChi & Sally
Complete the game with Capoeira.

Play as Robo-Z Gold
Complete the game with Heat. For the Japanese version of the game, complete the game in mix mode and unlock the Pander bonus level. Alternatively, complete the game with Tsutomu, Kelly, or Kitty-N.

Play as Pander
Complete the game in mix mode with Robo-Z Gold and unlock the Pander bonus level. For the Japanese version, complete the game with Robo-Z Gold on the normal difficulty setting.

Play as Hustle Kong
Complete the game with Hiro to unlock Hustle Kong. For the Japanese version, complete the game with Columbo or Kelly on the normal difficulty setting.

Play as Michael Doi
Complete the game with Hustle Kong to unlock Michael Doi. For the Japanese version, complete the game with Hiro or Sushi Boy on the normal difficulty setting.

Play as McLoad
Complete the game with Comet. For the Japanese version of the game, complete the game with Comet or Columbo on the normal difficulty setting.

Play as Sushi Boy
Complete the game with Heat. For the Japanese version of the game, complete the game with Bi-O or Hiro on the normal difficulty setting.

Alternate costumes
While a character is loading, hold Select to change their outfit.

Unlock Chi-Chi and Sally (Japanese version)
To get Chi-chi and Sally beat the game with Capoera on any mode. You can use continues as much as you like.

Unlock Columbo (Japanese version)
To get Columbo beat the game with Shorty

Unlock Hustle Kong, Michael Doi, and McLoad
o get Hustle kong, Michael Doi, and McLoad beat the game with all of the 10 starting characters (They will gradually appear on your character select)
OR Hustle Kong
Beat the game in normal as Columbo or Kelly

Michael Doi
Beat the game in normal as Hiro or Sushi Boy

McLoad
Beat the game in normal as Comet or Columbo

Unlock Pander (Japanese Version)
To get Pander, beat the game with Robo-z in mix mode OR beat the game on normal with Robo-Z Gold

Unlock Robo-Z Gold(Japanese version)
To get Robo-Z Gold beat the game with Tsutomu, Kelly or Kitty-N

Unlock Sushi Boy
Beat the game in normal as Bi-O or Hiro

Acid Line song
Enter the sound options screen and select music test. Hold Left or Right to quickly cycle through the song selections. Robo-Z Gold's song "Acid Line" will flash among the titles. Try stopping the cycling on that song to hear it.

More points
To earn a higher score, anticipate your player's first move and press the button before it appears on the screen (in the blank bar). The game will skip the first move and you will earn higher points.

Steal a solo
Attack an opponent just before their solo to steal it and do your own as well for extra points.

Shrink your opponents
Capoeira and ChiChi & Sally can shrink their opponent by attacking them. If you attack twice in a row, they will remain small for the entire battle.

Counterparts
Most players have counterparts, and they are:

Shorty - Columbo
Hiro - Hustle Kong
Kitty-N - Michael Doi
Comet - Sushi Boy
Kelly - McLoad
Capoeira - ChiChi & Sally