User blog comment:B214/Question and Answers 2/@comment-85.154.145.120-20140206053425/@comment-1359322-20140206053825

Don't know, but i don't think it's possible. I think the maximum amount of wings possible for Angels and Fallen Angels are 10. Azazel and Michael are an exception because they are/were the leaders of their respective factions. Even Shemhazai has 10 wings even after his promotion into Governor General.