WARNING: EPISODE 9 (SERIES FINALE) SPOILERS AHEAD!
WandaVision episode 9 finally gave us the most awaited fight. Agatha Harkness and Wanda Maximoff went toe-to-toe against each other. We finally got to see Agatha’s true powers. During the fight, Agatha almost drained Wanda of her powers. Ultimately, Scarlet Witch borrowed Agatha’s rune trick and left her powerless. Agatha was defeated and asked whether she was going to be locked up somewhere. Unfortunately for her, Wanda had a more poetic punishment in mind. “I’ll give you the role you chose,” Wanda said, as she condemned Agatha to life in the real Westview as “The nosy neighbor.” Wanda then promptly transformed her appearance to something more befitting modern times and the suburbs. With her real personality presumably buried deep, and no knowledge of magic, Agatha displayed the bright and sunny demeanor she’d only emulated before.
Wanda assured Agatha nobody would ever bother her — and that she would be seeing her. This called back to the fact that, while pleading, Agatha said Wanda was going to need her regarding what had now been unleashed. “If I do, I know where to find you,” Wanda replied, before later taking care of everything else and leaving town. Agatha’s future in the Marvel Cinematic Universe can go in possible directions from here.
Firstly, now sans powers and forced to live a normal life, she may connect with any shred of humanity she may have left. People under Scarlet Witch’s control always remembered what transpired upon awakening. As such, spending however much time living among regular people and being reliant on self and others more than magic, could shift Agatha away from villainy. That would bring her more in line with the comics. Then again, this time could be viewed by her as being outright hell on Earth. Therefore, Agatha may emerge more villainous than ever (as well as now extremely vengeful). Whatever the case, Agatha served as a testament that the MCU has learned its lesson about merely killing off intriguing antagonists.