Here are some cheats and tips for the game Aero Fighters.
Fight as Rabio:
Hold R and press Left, Down, Right, X, Y, A, B, Left, Down, Right, Down,
X, Y, A, B on controller two at the character selection screen.
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Boss endurance mode:
Hold R and press A, Left, Y, Right, X, Down, B, Up on controller two at
the character selection screen.