Press Start to change the type of orb you have
Upon selecting a character it will prompt for a password. Enter one of the following for a level 32 character.
When the credits begin hold up and press medium punch. A little robot will appear. Press medium punch to shoot down the letters in the credits.
1, 2, 3, 4, 5 and 6 correspond to the buttons as noted in game.
"Y" stands for "Yashichi", which is input by hitting the Start button.
"M" stands for "Mobi-chan", that little robot suit, which is input by holding down and pressing Start.