Ofcourse. Although from what I've seen, a lot Griffon OCs for this series are either jerks or hate Gilda.

As for one with more dimension, maybe like this:

"Dear Grimwing

Today my sister and I moved to Ponyville. To be honest, I've heard a lot bad things about this place and the inhabitans being hostile towards strangers, especially a Pony name Pinkie Pie. But what if it is justified in my case? What if ancient instincts take over? If I snap and start hunting and comsuming them? Even if not, will it freak them out that I'm a carnivore? A terrible monster in their eyes? Or will they see it as part of my nature?....."