Ok, this one I got a little more creative...
Gemspine dragons are bound to a gemstone and their bodies relative to it(color, shape, etc)
Gyrus has an Ice Gem, but the name is due to the color only, it has nothing to do with cold.

Nice OC if I say so myself XD also drawing dragon paws in a 3x3 square is BIG challange.
May use him as a enemy in some game or whatever.