Many codes
Here are some codes, most of which I'm positive will work.
Infinite Super Bombs - DE1C-81F9
Infinite Bottle Rockets _ D01D-85F9
Infinite B..
Walk -through walls
Technically, this is game genie, but they're both used for the same purpose.
Here's one of the codes. CB93-746F
Another if it does not work. DE1..
Helpful Codes
EE2E-7D01 Start with a super strong character
BB2D-5461 Start with a lot of H.P.
BB2F-54A1 Start with a lot of PSI
Different Levels
DB23-77D1 Start with a level 9 character
DE23-77D1 Start with a level 15 character
7423-77D1 Start with a level 50 character
1723-77D1 Star..