Ukko looks bigger and heavier than he is with broad shoulders and thick black fur suitable for winter. The summer months thin him out a little but he still holds an illusion there's more to him than there is. He is strong but built for speed, impressing others because he looks more like a brute force than anything. He has a few scars on his shoulders and hocks but his fur usually hides them and his eyes are a brownish orange color. Two fresh tooth-induced scars cross the top of his muzzle as well as an ugly scar from a gash above his right ear.