Well, he's a mercenary that wears a breathing mask and goggles most of the time.
Kinda like this:

But more steampunk. The mask should be round and made of leather, and the goggles made of aluminum and the straps of leather. He has longish hair, wears a longsleeve red shirt. He wears a chestplate made of aluminum as well, and brown pants. He wears a poncho, kinda like those cowboys did back then. He wears leather shoes, and spats over them.
A bit skinny, not overly tall, around 5'7".
Need more info?
Also, all I have is Gold. D: