Warning — This article contains spoilers for WandaVision

At the end of WandaVision's fifth episode "On a Very Special Episode..." fans were left shocked and asking a million questions when Evan Peters appeared at the doorway acting as Pietro Maximoff. Through the lens of the audience, Kat Dennings' Darcy Lewis sat in awe asking, "(Wanda) recast Pietro?" 

This big reveal has opened up the floodgates for fans to theorize what will happen next in the Disney+ series. Peters is known for his role as Quiksilver in three of Fox's previous X-Men films, so there is a clear connection between him and Aaron Taylor-Johnson's portrayal of Pietro that cannot go without being explained.

With the multiverse set to play a key role in Tom Holland's third Spider-Man and Doctor Strange In The Multiverse of Madness, it is easy for fans to assume that the multiverse will be used as an explanation for this surprise arrival. 

The reason Peters has joined the WandaVision cast will be revealed as the season progresses, but until then there are a few ideas The Direct sees as a possibility. However, the creator of WandaVision has just given some background on Peters being cast to officially shed some light on the matter. 

QUICKSILVER RECAST AS QUICKSILVER

Marvel Entertainment recently released an interview with WandaVision showrunner Jac Schaeffer in which she describes the process of bringing Peters on board, explaining her challenge of "how in the world are we going to make this make logical sense?"

“We loved the idea of [bringing him back]. And then we were like, 'how in the world are we going to make this make logical sense? Like, how do we justify this?' Because that's the thing, you can hatch a million great ideas, but to make them land, to make them be grounded, to make them feel organic to the larger story.”

Schaeffer explains that they thought introducing Peters in the "mind scramble" that is WandaVision would be "the biggest thrill."

“This show is such a mind scramble, and because it's working on so many levels, and there's so many notions of what's real and what's not, and performance, and casting, and audience, and fandom, and all of that, we just thought it would be the biggest thrill to bring Evan (Peters) over to the Marvel Cinematic Universe.”

She continues by explaining how the entrance of Peters' Pietro fits perfectly into a class sitcom trope:

 “We thought like, 'how do we give him this entrance, and then enjoy that, and then make it crazy?' And we long had the idea of the trope of the brother, or the relative, or whoever comes to town and like, stirs things up with the family — that sitcom trope.”

She concludes her interview by teasing Marvel Studios President Kevin Feige's wish "that it made sense."

“Everybody was really excited. I think Kevin [Feige, Marvel Studios president] wanted to make sure that there was a reason for it, that it made sense. And I hope that's what we did.”

EVAN PETERS CAMEO WILL BE EXPLAINED

Schaeffer repeatedly explained her and Marvel's desire to make sure this unexpected appearance of a new Quicksilver would make sense.

Currently, fans, bloggers, and podcasters are hatching a million of their own ideas all over the internet, trying to decipher how this addition to the MCU will in fact "feel organic." 

As we have already speculated, Peters could be literally recast as Quicksilver moving forward in the MCU, or back as the Quicksilver from X-Men with this being the first real look at the Multiverse moving forward. One thing is for sure, Schaeffer and co. brought on Peters for a purpose, whether that is to simply throw fans off the scent of what is truly going on or to introduce viewers to alternate realities.

The bottom line is that it's unlikely anyone will figure out why and how Peters is on WandaVision until the final four episodes of the show reveal the "reason for it." The more fan theories continue to pour out, the more likely the right answer is out there somewhere. The only way to find out is by tuning into WandaVision each Friday until their season finale on March 5, 2021.