Viewtiful Joe cheats and cheat codes for Gamecube

Unlimited Health:
In the pause menu press up, up, down, down, left, right, left, right. 
Then exit the pause menu. You should end up unlimited hearts.

Super mode:
Finish the game with a "Rainbow V" rating in all Episodes ("V" rank 
for V points, Defense and Time on all tasks). Choose the "New Game" option,
select the character used to complete the game. That character will have 
unlimited VFX.

V Rated mode: Finish the game in Adult mode.
Ultra V Rated mode: Finish the game in V Rated mode.
Unlock Alastor: Finish the game in V Rated mode.
Unlock Dante: Finish the game in any difficuly mode.
Unlock Sylvia: Finish the game in Adult mode.
Unlock Captain Blue: Finish the game in Ultra V Rated mode.
Viewtiful World movie: Finish the game in Kids or Adult mode.
Viewtiful Forever movie: Finish the game.

Completion bonus:
Complete the game, then play it again in the same mode. You will start with all of 
Joe's powers (Slow Motion, Mach Speed, and Zoom In).

Extra LIVE.:
Find 50 film canisters

Unlimited VFX meter:
Get all the rainbow V's, in every level, with any character