Who Does Agatha Harkness Work for in 'WandaVision'? Marvel's Villain Revealed!

Warning: Major spoilers ahead!

Fans of Marvel's WandaVision have been attempting to piece together who is the mastermind behind the sitcom town of Westview. While many fingers pointed to the Scarlet Witch as the sole puppeteer, Episode 7 of the Disney+ series finally revealed that Wanda's neighbor Agnes is actually the person pulling the strings. 

The bombshell realization came at the conclusion of the episode, which revealed that Agnes' real name is Agatha Harkness and she is also a witch who has been manipulating the events happening in Westview, including killing Sparky the dog. So, just who is Agatha? Does the comic book character work for another villain in the Marvel Universe?

At the conclusion of Episode 7, Wanda cannot find her twin boys and goes searching for them. Agatha tells Wanda that they're probably playing in her basement, which we soon learn is the witch's lair. The episode ends with Agatha revealing her true identity and the part she played in Westview. 

So, who is Agatha?

In the comics, Agatha is a powerful witch who was burned at the stake during the Salem Witch trials and later came back to life. Agatha becomes a mentor to the Scarlet Witch and helps her master her powers. In the final moments of the episode, fans watched Agatha put a trance on Wanda. 

Comic book fans know that Agatha erases Wanda's memory of her kids, after the Scarlet Witch finds out from her mentor that her children were created from pieces of Mephisto's soul and that he reabsorbed them. Ultimately, Wanda discovers this and kills Agatha.

While we're unsure if Agatha will be the sole villain of WandaVision, some fans have predicted that the powerful witch actually works for the Marvel villain Mephisto. 

Before Agnes revealed her true identity, she constantly talked about her husband, Ralph. However, viewers never saw the nosy neighbor's husband, which have many theorists guessing that Ralph is the powerful "devil" known as Mephisto who is after Wanda's children.

Other clues that Mephisto will appear as WandaVision's big bad is that Agnes has a white rabbit named Señor Scratchy. In the comics, Mephisto uses the alias "Nick Scratch." Agatha's son in the comics is also a sorcerer named Nicholas Scratch.

Additionally, many fans believe that Mephisto will be the villain in Phase 4 of the Marvel Cinematic Universe. With references to Mephisto already being made in WandaVision, eagle-eyed fans noticed a few more clues that connect this devilish villain to future shows. 

In the Loki trailer, Owen Wilson's character is seen handing something to a little girl in church. If you look behind them, a devil appears on a stained glass window. 

This seemingly immortal being has the power to manipulate time, memories, shapeshifting, and much more. 

Basically, Avengers... assemble!

Catch new episodes of WandaVision on Disney+.