Despite the overwhelmingly positive reception Agatha Harkness (Kathryn Hahn) received for her series debut in WandaVision, Agatha: Coven of Chaos needs to hit all the right notes for Marvel and non-Marvel fans alike. When Agnes first quipped her way onto the Disney Plus series, she was just the friendly neighbor of former Avengers Wanda Maximoff (Elizabeth Olsen) and Vision (Paul Bettany). She could be a bit overbearing, but always had a joke and a hand to spare. Audiences were shocked when Marvel revealed her true identity in a song that was as catchy as it was cheeky: “It was Agatha all along!”