Tako Trash

Tako Trash (タコトラッシュ) is the boss of the second Wily Stage of Mega Man 4. It sends out large exploding balls and spits flames. The green light on its forehead is the weakspot, and the best weapon to use here is Ring Boomerang.

Trivia
"Tako" means octopus in Japanese.

He and Dust Man share some things in common. They both have vacuum-like parts on their heads, they both have something to do with trash, and both of their weaknesses is thr Ring Boomerang.