Just some guy, you know?
I agree.That looks like a micro brittle starfish, harmless and will multiply. I like them.
On the other thing it looks like a Pod, but you can tell better by behavior than look. Monti Nudies are very, very small, and will only be on Montis. The nudies are easy to kill, but the eggs are the real concern because they will survive a dip. In the future if you see a nudi come off in the dip, you can be sure that there are eggs on the coral.
Bare spots on the coral don't mean nudis, I would inspect closely. It could be a bad reaction to the dip, or some stray glue got on it, or things like that.