Bomberman Jetters Cheat Codes for Gamecube

Bomber Mansion
Start a new game as bomberman, then kill yourself with bombs. The Prof will say you need more time at Bomber Mansion. When it asks you to continue, select no and go to the main menu.

Multiplayer Characters
These are the extra characters you can play as in Battle Mode

Hige Bandit 2:
Collect all 3 Red Hige Hige cards

Hige Bandit 3:
Collect all 3 Blue Hige Hige cards

Hige Bandit 4:
Collect all 3 Green Hige Hige cards

Mighty:
Collect all 5 Jetters cards

Mujoe:
Collect all 3 Yellow Hige Hige cards

Planet Bomber world
Get all ten Lightning Cards from the evil bombers, then defeat the Boss in level 5-4 (Warhorse). The Planet Bomber world will now be unlocked. In it, you will battle two new Bosses (Mujoe and Dr. Mechadoc).

Bomberkan mode
Intentionally lose the game in normal mode and do not continue. Bomberkan mode will now be unlocked at the title screen.

Level 6
Collect all ten Lightning Cards and defeat the level 5-4 Boss to unlock level 6.

Alternate ending
Successfully complete level 6.