The Three Witches: The three witches where presented by Banquo in act 1 sence 3. The witches in "Macbeth", they provide Macbeth's primary call to action. The witches' prophesies also affect Lady Macbeth, albeit indirectly when Macbeth writes his wife about seeing the "weird sisters," as he calls them. The Three Witches, also known as the Weird Sisters or Wayward Sisters, are characters in William Shakespeare's play Macbeth. They hold a striking resemblance to the three Fates of classical mythology, and are, perhaps, intended as a twisted version of the white-robed incarnations of destiny.