Kathryn Hahn's Agatha Harkness is perhaps the breakout character of Marvel Studios' first four Disney Plus MCU series (with apologies to Owen Wilson's Mobius and Alligator Loki). Marvel Comics knows an opportunity when it sees it and that means Agatha is back apparently making life difficult for Billy Kaplan, AKA the powerful sorcerer Wiccan, perhaps better known as Wanda and Vision's son Billy from WandaVision.
In today's Marvel Universe, Billy is one-half of a grown-up power couple along with
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