This one lives in the mountains where snow covers the trees. He's a caretaker of his surroundings, listening to the needs of the creatures in his territory and striving to fulfill those he can. He understands life, and that it's a circle where everything survives based off of each other. Knowing that, he's selective in what he removes from the circle so as to not diminish the cycle.
He also protects it fiercely. There have certainly been times where man has lead an expedition into his valley and they've never returned. There's no civilization within his land, at least not the kind that cares not for the surroundings as much as he does. There are certainly tribes, but he keeps a very close eye on them all.
This particular dragon doesn't use magic, and would sooner leave himself black scaled if he cast a single spell. Being a dragon, of course, means he's somehow tied to the flow of the world's energy and can certainly sense where the world hurts most. He is a being of magic, even if his preferred methods involve teeth and claws.
Link
Nekona
Great character sheet, the expression at the cupcake made me giggle. Also, this reminds me a bit if the 3.5 draconomicon in the way it is designed, a very nice design choice. ;)