A witch who has been taking other witches' power for three hundred years by selling them a road that does not exist.
Agatha Harkness is introduced as a sitcom neighbour and revealed as the person who has been studying Wanda Maximoff from inside her own fantasy. The reveal is delivered as a musical number, which should not work and does.
Her own series is better than it needed to be. She murdered her original coven, she failed to save her son Nicholas Scratch, and she has spent the centuries since running the same confidence trick: the Witches’ Road, a trial that grants what you most want, which she uses to gather witches and take what they have. Kathryn Hahn plays her as someone who is genuinely funny and genuinely not safe to be near.