The Haunted Mansion Cheats - GameCube

Zeke is a skeleton
Hold [A] + [B] + [X] + [Y] at the opening sequence, before the legal screen. Release the buttons at the title screen.

Zeke is invisible
Hold [A] + [B] + [L] + [R] at the opening sequence, before the legal screen. Release the buttons at the title screen.

Invincibility
Hold [Right], then press [B], [X]x3, [B], [X], [Y], [A] during game play.

Weapon upgrade
Hold [Right], then press [B]x2, [Y]x2, [X]x3, [A] during game play.

Level select
Hold [Right], then press [X]x2, [B], [Y]x2, [B], [X], [A] during game play.

Full health
When low on health, save then quit the game. Reload the saved game to resume with your health restored.