Hari Harry

Hari Harry (ハリハリー) is a porcupine robot enemy in Mega Man 3 created to guard mines of energy resources. They are native to Needle Man's stage. They shoot needles and roll up into balls like hedgehogs. They are invincible as long as they are rolled up. Gemini Laser and Top Spin destroys these porcupines in one hit.

Trivia

 * Hari means needle in Japanese.