The obvious villain

Whoever Mads Mikkelsen is playing is one of the villains of Doctor Strange. But is he the only one?
At this point, we only have what Marvel previously said – that his character used to be a pupil of the Ancient One, who broke loose and who started his own magical sect, with his own followers. And that isn’t too much to go on.
There could be a couple of hints in the look that Mads Mikkelsen is sporting, namely in the way his eyes seem to be burned from the inside, as if he were just a vessel for some powerful entity who is trying to escape into the world. And, in this case, and just like in many other MCU flicks, Doctor Strange will also have a hidden villain that works as a puppeteer, having his/her will being done by the obvious baddie.
Who could that villain be? But before that…
