Flying rectangular blocks

s are Enemies in Bullethead. They will come from the left or right, and try to crush the player.

Attack
They will fly from the left or right of the side of the screen, then fly down. When they get to the ground, to knives will come out both sides of them. They will then move to the left or right past the edge of the screen.

Description
The front of the block has a 3-eyed skull on both sides. On the