The cheats I know
Here are some of the cheats I know for Marvel Super Heroes:
Alternate Costumes:
On any character hold UP or DOWN for three seconds. If the character you want is on the top row, hold UP. If they're on the bottom row, hold DOWN.
Kick him when he's down:
After you win the final round, press L+R and you can now still hit the beaten character.
No gems in versus mode:
Hold SELECT before the match starts.
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