Smasher aliens

The  is an enemy in Bullethead. By the looks of it, the Alien looks like it is either a Mechanic, Scientist, or possibly pilot.

Description
The Purple Alien has 2 Small tentacles on top of his head, and is wearing a mask over his eyes with 3 eye holes. He operates a small Flying Saucer that has to levers on it. The alien carries around a Giant Block for an attack.

Attack
He will come onto the screen holding a large block. He will hover around in the air holding the block, but he will never go through the entire edge of the screen. He will eventually drop it the block, cutting off the player from the other side of the Block. The Purple Alien will then fly around a bit, sometimes through the edge of the Screen. The alien will sometimes got the opposite direction of the player. He will eventually pick up the block again. When the alien is destroyed, ther block will explode too.