13 Marvel Villains Still Alive In The MCU (Who Could Return)
6. Mordo
Having been introduced as a good guy associate of Doctor Strange and the sorcerors, Karl Mordo swerved right at the end of the good doctor's stand-alone MCU debut when his disgust at how much the sorcerors meddle with the natural order of the universe bubbled over.
As he confirmed to Jonathan Pangborn as he stripped away his powers, his intent is to rid the world of sorcerors to stop them perverting nature with their powers.
Where Is He?
Presumably wandering the world cleaning up after the Masters Of The Mystic Arts and losing his grip further on what constitutes moral goodness. Expect him to pop up again soon.
Threat Level
As a skilled sorceror (pretty much top three in the universe, in fact), Mordo is a danger and the fact that he's motivated to bring down Doctor Strange and his entire magical organisation should be a worry. He's also one of the only surviving villains that we can bet for certain is coming back in a big way, presumably in Doctor Strange 2.
He has an axe to grind and you can be damn sure he'll have his day - even if it means allying himself with a powerful evil entity along the way.