Podshooters will open up and shoot space bullets at you. You can only harm them when they are open.
Space Tropper
These guys are elite. They can walk, jump from block to block, shoot, and they take more than one hit to kill. You'll also encounter a blue version of them that can shoot further.
Space Biker
They may only take one shot to kill them, but they can take a lot out of you too. They randomly land on the screen then zoom towards you.
