Wyrd Sisters

The Wyrd Sisters are the overarching antagonists of Shakespeare's play Macbeth. They are portrayed by various actors in film/theatrical adaptations. In the play, they are seen as master manipulators of history itself, and it's possible they were modeled on the Fates of Greek folklore.

Personality
Perhaps deliberately, little to nothing is known of the true nature of the Wyrd Sisters. Such an enigmatic nature makes them even more frightening and makes them a looming shadowy threat which all Kings of Scotland must deal with. Many are driven to madness by the Sisters' prophecies, which makes them even more formidable. They seem to use psychological abuse as their main power, and even Shakespeare himself makes it unclear whether their paranormal nature is mind trickery or real magic.