5 details to remember before watching the 'WandaVision' spinoff 'Agatha All Along'

Joe Locke as Teen, Aubrey Plaza as Rio Vidal, Kathryn Hahn as Agatha Harkness, and Sasheer Zamata as Jennifer Kale in "Agatha All Along."
Joe Locke as Teen, Aubrey Plaza as Rio Vidal, Kathryn Hahn as Agatha Harkness, and Sasheer Zamata as Jennifer Kale in "Agatha All Along."Chuck Zlotnick/Marvel Studios
  • The "WandaVision" spinoff "Agatha All Along" premieres on Disney+ with two episodes on Wednesday.

  • The Marvel series stars Kathryn Hahn as a witch named Agatha Harkness.

  • Business Insider has previewed the first four episodes. Here's what you need to remember before watching.

Marvel's "WandaVision" spinoff series "Agatha All Along," centered on Kathryn Hahn's witch, Agatha Harkness, has arrived just in time for the spooky season.

Agatha, first introduced as the villain in the 2021 miniseries "WandaVision," returns in her own series, which debuts on Disney+ on Wednesday with two episodes. This time, she embarks on a journey on the Witches' Road with a coven of unlikely allies in the hopes of regaining her powers.

In case you need a refresher on what happened to Agatha in "WandaVision" and other important details from the Marvel Cinematic Universe, Business Insider has you covered with the most pertinent information to keep in mind before diving into the new series.

Agatha Harkness is a witch who was put on trial in Salem in 1693 for betraying her coven.

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Hahn as Agatha in "WandaVision."Marvel Studios

Agatha goes rogue by stealing forbidden knowledge and practicing dark magic, which is against the rules. During her trial, Agatha's power takes over and she murders the other members of her coven, including her mother, before they can kill her.

It's unclear what Agatha does in the years following the incident, but about 300 years later, she senses the magic in Westview and infiltrates Wanda Maximoff's hex so she can investigate how Wanda is able to conjure enough power to create an entirely new reality and control the minds of the townspeople.

Beyond learning the source of Wanda's immense power, Agatha's main objective is to take the power for herself.

Agatha uses the dark magic of the Darkhold to fight Wanda Maximoff in "WandaVision."

Kathryn Hahn as Agatha Harkness on the series finale of "WandaVision."
Hahn as Agatha in the series finale of "WandaVision."Marvel Studios/Disney+

The Darkhold, also known as the Book of the Damned, contains dark magic spells. In "WandaVision," Agatha takes the Darkhold with her when she visits Westview, the town in New Jersey where Wanda trapped the inhabitants in a hex so she could live out a perfect fantasy life with a fake family instead of grieving the death of Vision.

Agatha taps into the dark magic of the Darkhold to fight Wanda during the series finale. However, Wanda defeats her by casting runes that prevent Agatha from using her magic.

Agatha is powerless because of Wanda.

Kathryn Hahn on the series finale of "WandaVision."
Hahn in the series finale of "WandaVision."Marvel Studios/Disney+

During their showdown, Wanda removes Agatha's magic and absorbs it, fully becoming the Scarlet Witch. Instead of locking her up, Wanda leaves a powerless Agatha stuck in Westview and puts her under a spell that reverts her to her sitcom persona of a nosy neighbor named Agnes.

"Agatha All Along" picks up with the titular witch going on a trip to regain her powers.

Wanda was last seen sacrificing herself in "Doctor Strange in the Multiverse of Madness."

Wanda in Doctor Strange in the Multiverse of Madness
Elizabeth Olsen as Wanda Maximoff/Scarlet Witch in "Doctor Strange in the Multiverse of Madness."Marvel Studios

At the end of "WandaVision," Wanda gets her hands on Agatha's copy of the Darkhold. She becomes corrupted and takes a villainous turn in the 2022 "Doctor Strange" sequel. Wanda's obsession with reuniting with her fictional sons, Billy and Tommy from "WandaVision," drives her to kill anyone who gets in her way.

By the end of the movie, Wanda destroys every copy of the Darkhold using her chaos magic, leading Mount Wundagore to collapse on her.

Her fate is unclear, but there's a glimmer of hope: as the mountain collapses, a flash of her red powers appears, suggesting that Wanda may have used her abilities to protect herself.

Wanda hasn't made any additional appearances in the MCU since then. But according to Deadline, it's possible that Elizabeth Olsen could reprise the role in the upcoming untitled "WandaVision" spinoff series centered on Paul Bettany's Vision.

Agatha has a pet rabbit named Señor Scratchy.

Kathryn Hahn's Agatha Harkness holds a rabbit in season one of "WandaVision."
Kathryn Hahn as Agatha Harkness in "WandaVision."Marvel Studios/Disney+

Many fans were convinced that Agatha's rabbit, Señor Scratchy, was actually her son named Nicholas Scratch from the comics. However, the creature's name appeared to merely be a nod and nothing more.

It remains to be seen if the MCU will introduce Nicholas Scratch, but fans have theorized that "Heartstopper" star Joe Locke's mysterious character, Teen, could be her son Nicholas or Wiccan, a reincarnated version of Wanda's son named Billy Kaplan.

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