Mister Mosquito Cheats

How to do an In-game reset:
While playing the game, push L1 + L2 + R1 + R2 and push Start + Select.

Unlock Mother Mosquito:
Press and hold L1 and push Up, Right, Left, Down, Square, Square, R1, R1, R1 at the character selection screen. You will hear a shout if you have entered the code correctly.
User Cheat by Belliard

Unlock Father Mosquito:
Enter the mother mosquito code (above),. now press and hold L2 and push Up, Right, Left, Down, Square, Square, R2, R2, R2 at the character selection screen.
User Cheat by Belliard
You will hear a shout if you have entered the code correctly.

Unlock Two player mini-game:
Press and 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. Or press and  hold L2 and continuously rotate the Right Analog-stick clockwise at the title screen.

Unlock Year 2:
Fill each of the sixteen Ex Tanks to unlock Year 2.

Unlock Special costume:
Unlock all alternate costume colors on every level.