Block Devil

Block Devil is the boss of the third Wily Castle stage in Mega Man 10. He is part of the Devil series of robots.

Attacks
The Block Devil attacks by making some of the blocks from the floors and walls come together. Then the eye comes from below the screen to enter into the blocks and shoots plasma balls. After this the blocks go back to their original spots. The eye appears below the floor and makes all the blocks that were used attack by jumping out of their spots, and restart its attack pattern.

Weakness: Rebound Striker/Thunder Wool

Trivia
The Block Devil may be a combination of a Devil and the Picopico-Master from Mega Man 2.