Play as Dark Jake (Dark Hiroki):
Enter ANKOKUNOSENSHI as a password in Katakana in the Japanese version of the game. Enter GOODRIVAL as a password in the Chinese version of the game.

Play as Dark Specter:
Enter KYUUKYOKUMAJIN as a password in Katakana in the Japanese version of the game. Enter DARKRIVAL as a password in the Chinese version of the game.

Play as Legend:
Enter DENSETSUNOTATSUJIN as a password in Katakana in the Japanese version of the game. Enter NOWMASTER as a password in the Chinese version of the game.

Play as Virus Casi (Virus Charu):
Enter NANNINIRUKANA as a password in Katakana in the Japanese version of the game. Enter MOREMORE as a password in the Chinese version of the game.

Play as Volcano:
Enter UFUSANOAKAISARU as a password in Katakana in the Japanese version of the game. Enter REDMONKEY as a password in the Chinese version of the game.

Play as Pipotrons:
Enter THREEMEN as a password in the Chinese version of the game.

Ape costume for Spike:
Enter KAKESARU as a password in the Chinese version of the game.

Play as Helga (Haruka):
Successfully complete the Kakeru episode.

Play as Jake (Hiroki):
Complete all tournament modes.

High Tech Coliseum difficulties:
Successfully complete High Tech Coliseum under the easy difficulty to unlock the medium difficulty. Successfully complete High Tech Coliseum under the medium difficulty to unlock the hard difficulty.