Haha, he does look quite odd.
As soon as I got WA, I jumped into challenges and the immortal dynasty. I haven't had time to explore yet, so I know nothing about mummys. So this wasn't any attempt of mine to change him or anything.
He actually just appeared on Carey's friends list, and so I invited him over to see what was wrong with his face.
He doesn't walk like a mummy or anything. Just has half the face of one.