Alsym

He is a big bulky looking dragon, though most of it is fluff to help keep him warm in the cold. Underneath he's rather slim.
He can breathe fire, typically the flame starts blue in colour then fades into red after a second or two.

Alsym enjoys being alone, in fact he lives in a place that few other dragons are able to come. He typically puts on a gruff and unfriendly act when he does come across anyone, but when alone he's about as gentle as a dragon could be, especially when it comes to smaller animals.
He is very careful about hunting, and keeps a close eye on local animal populations, sometimes choosing to go vegetarian or to hibernate if there aren't enough animals.

Where he currently resides, near the icefields, used to be a bustling hub for dragons like him, but now it rests frozen and empty.
One night over 400 years ago some calamity occurred, resulting in most all of his kind disappearing, leaving him alone.