Masteria Expansions, Names and the proof for each

I find it amusing that Nexon's own forums have less info than other non official sources...they are happy to "leak" info to other sites but cant find the time to post anything on thier own site.

It looks like a futuristic Gun to me that the smaller blue monster is holding.

I thought that too, at first, however taking a closer look:

you can see it has that yellow part branching out, as though it's the limbs of a crossbow. Combine that with what we know of the keep and it seems clearer.