Nosmor

Nosmor came to the Safety of Romer one winter night a few years ago. No one had seen or heard him enter the cave then, and he probably would have gone unnoticed if his tail didn't stick out of the entrance to the tiny lair he decided to sleep in. Tyranus, doing her daily check-ins with the other Romer denizens, nearly tripped over his log-like tail on her way to give her tallies to Mrak. When Tyranus asked who he was, he gave no reply, and shuffled a little deeper into the lair to accommodate his tail. Tyranus left him alone, but word quickly spread all around the cave that there was a giant imperial in their midst. Later that morning, Nosmor left the little lair and helped himself to some food, acting as if he always lived in Romer.
Many have tried to interact with him and figure out who he is and where he is from, but he has yet to give them more than a shake of his head and a solemn, "That doesn't matter anymore."
Nosmur is far too proud to tell them how and why he came to their little refuge, even after months of living there. Before settling in the Safety of Romer, Nosmur was a young commander of a very infamous legion known for its very tough jobs and high mortality rates. He thought that with his extensive knowledge on war and his military prowess, he could reshape his soldiers into being known as one of the most prestigious legions in the Ice territory. However after a fairly large war where he lead far too many dragons to their deaths, he walked off the battlefield alone, ashamed, and guilty. He kept roaming until he was exhausted-- which was coincidentally in one of the lairs on the outskirts of the cave of the Safety of Romer. He's lived there silently and apart from everyone else ever since.

@Cazrel

I opted to go for Nosmor, shown below. I felt like Alpha - Anteludium by Epica suited him.

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