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Mother Mosquito:
Hold L1 and press Up, Right, Left, Down, Square, Square, R1, R1, R1 at the
character selection screen. A shout will confirm correct code entry.
Father Mosquito:
Enable the "Mother Mosquito" code. Then, hold L2 and press Up,
Right, Left, Down, Square, Square, R2, R2, R2 at the character selection
screen. A shout will confirm correct code entry.
Two player mini-game:
Hold Start + Select on controller two after turning on the system. Press
Square to move forward, X to jump, and Triangle (when the power meter is
full) to do a super attack.