Dompan

Dompan (ドンパン) (Firework Thrower in Mega Man for Game Gear) is an enemy in Mega Man 4 and Mega Man IV. It is only found in Bright Man's stage, and often with the 100 Wattons. If a 100 Watton was destroyed, destroying one of these will turn the lights back on.

Trivia

 * Dompan's name is an onomatopoeia for the sound of a mortar launching a firework. Similarly, donpachi (ドンパチ) is an onomatopoeia for the sound of a gun being fired.