Unlimited Batarangs
Press L, R, White, Y at the main menu. A sound will confirm correct code entry.
Master code
Press L, R, L, R, X, X, Y, Y at the main menu. A sound will confirm correct code entry.
Unlimited electric Batarangs
Press L, R, B, White, L at the main menu. A sound will confirm correct code entry.
Bonus characters
Press Left, Right, Down, White, L + R, then press Start at the main menu.
Cheats submited by Brian2895 on August 23, 2006