>To me seems more amazed as other character for what he sees, but he need to not be too noisy for remain hidden.
I would buy that if Battiwigs had his jaw open in awe the whole time. He just lets out a small, calm, controlled "yep", which I guess it supposed to be humorous: it's much more subdued than Zack's and Rose's reaction, as if to say that there is no need to be so charmed and paralyzed like these two are.
>I would not surprised if anyway Battiwig knows already something, but I expect more that is Wranglum to explain why they "need" of that stuff, for some kind of power or something they need for their plans. One thing that we already see in the last promo is they working on some crystals, so probably they know much more of the other Fillys in the Academy (except probably for Princess Sparkle).
My bet is that Batti and Wranglum are blindly hunting for anything that seems even remotely magical and/or powerful. "This is a glowing blue meteor from the heavens, of course it's valuable and powerful! Batti, go get it!"