I'm thinking of maybe scaling up his head a little. The way I design these characters is that I usually keep all their heads the same size, and only change the size and shape of the body and limbs. That way, it's easy to see the size of characters in relation to each other. But once they start to get this big, their heads end up really tiny and, while his mane helps to make his head appear bigger than it is ... I just don't know if I'm happy with it. Also, he'd be more intimidating if he were to get up in someone else's face and his head was noticeably bigger than theirs.