Aubrey Plaza is officially playing the green witch Rio Vidal on 'Agatha All Along,' but there are hints that she's actually Blackheart, the child of Mephisto.

Cue Rio Vidal, an antagonistic witch with a long history and vendetta against Agatha. In the show’s premiere episode, she appears as a federal agent in Agatha’s “Agnes of Westview” illusion. Rio initially seems like an ally to Agatha as she attempts to get Agatha out of Wanda’s spell multiple times,

While Agatha is breaking down the title of the book stolen from the library, a paper under her notepad features "Bellevue," a fun little Easter egg. In the comics, Bellevue Hospital in New York is a recurring location for many Marvel heroes and villains, including the Night Nurse, Daredevil, Ms. Marvel, and Bullseye.

The much-anticipated fantasy sci-fi series Agatha All Along has made its way on Disney+ and is now piquing interest due to its easter eggs and MCU references. These easter eggs play a huge role in connecting fans with Marvel’s cinematic universe,

Agatha All Along is streaming and well, it wouldn't be a Marvel series without a cauldron full of Easter eggs now, would it? The supernatural series introduces a whole bunch of never-before-seen characters like Lilia Calderu (Patti LuPone) and Jennifer Kale (Sasheer Zamata),

Kathryn Hahn has put a spell on the Marvel Cinematic Universe again. The celebrated actress earned an Emmy nomination and her own earworm signature song for her MCU debut as Agatha Harkness in "WandaVision" in 2021.