Ooh, sorry, I removed those from the editor menu. They're kind of a failed experiment. Were you using them? I could add them back, until I have a better replacement. I didn't think anyone ever noticed them except me. I'm glad you've checked out the editor!
(Context for anyone reading along: The pentagon was something you could put on top of another object or enemy, to give it a shield, and the turret thing was a "disruptor" for the player to use to break shields. None of that was obvious from the editor, or documented anywhere.)
The shield is awesome. But the player-controlled turret was not much fun IMO, and it served no purpose after you were done breaking shields. I've got a plan to replace it with something more interesting and multi-purpose.