WandaVision episode 5 ended with a cameo from Evan Peters' Quicksilver, thus becoming the first property to introduce a multiverse character in the MCU and beating Spider-Man 3 to the punch at the same time. Rather than Aaron Taylor-Johnson's Pietro Maximoff coming back after being killed in Avengers: Age of Ultron, Evan Peters' Quicksilver showed up at Wanda and Vision's door. And while it's confirmation that a multiverse exists in some form, there's no telling what his appearance means for his MCU future or the X-Men movies being MCU canon.

It's been reported that the emergence of the multiverse in the MCU is going to be told essentially in three parts with WandaVision, Spider-Man: Homecoming 3, and Doctor Strange and the Multiverse of Madness as a final and culminating act. WandaVision has clearly kicked things off with the arrival of the X-Men version of Quicksilver, and it's possible more interactions with the multiverse are yet to come in that series before Spider-Man 3 releases in late 2021. Rumors for the upcoming sequel have reported appearances from several characters from Sony's previous Spider-Man films, potentially even prior Webslingers such as Andrew Garfield and Tobey Maguire. However, there's not much in Spider-Man's own story to create the inciting incident needed justify multiversal mayhem and characters from other universes.

Related: Why Scarlet Witch Can't Undo Death (Yet Quicksilver Returned)

Thankfully, Spider-Man 3 has WandaVision to do the legwork beforehand, while also holding more of a justification with Wanda Maximoff's story and powers to create the trigger that will more than likely kick off the story told in Spider-Man 3 (as well as Doctor Strange and the Multiverse of Madness). While Spider-Man: Far From Home did introduce the concept of the multiverse with Mysterio's arrival from another Earth, Mysterio ended up being a playacting villain from Spider-Man's own Earth. Now, WandaVision can help introduce the Marvel Multiverse in earnest, setting events in motion that will lead to Spider-Man's true interactions with the multiverse for the first time.

Spider-Man Tom Holland Tobey Maguire Andrew Garfield Spider-Verse

Had WandaVision not introduced the X-Men version of Quicksilver and Marvel Studios had decided to let Spider-Man 3 bear the burden of introducing the multiverse, it probably would have been a harder narrative sell. Using WandaVision to create the series of external events prior to the Spider-Man sequel is just logical. The film will be able to simply focus on Spider-Man's responses and reactions to the multiverse and its dynamic complexities, now that it will have already become a known quantity for audiences, and perhaps people in the MCU itself.

While it's as of yet unclear how Wanda will create this trigger event for the rest of the MCU to contend with - if she will at all - things are continuing to get more and more out of control with every episode of Marvel's WandaVision. Will Wanda break the multiverse with her powers while trying to maintain her happy ending with Vision? It seems as though it will have to be something she alone can't fix, necessitating the need for Doctor Strange's involvement. In Spider-Man's case, he might just be dealing with the fallout in Spider-Man 3, but MCU fans will soon know more as WandaVison continues on Disney Plus.

More: Why Spider-Man 3 Is A Better Multiverse Story Than Doctor Strange 2

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