'WandaVision' director says that fans disappointed by the true identity of Evan Peters' character should be patient

• Warning: There are major spoilers ahead for Marvel's "WandaVision."
• Director Matt Shakman spoke to Entertainment Tonight about the identity of Evan Peters' character.
• Shakman said that disappointed fans should be patient because mutants and the multiverse are coming.

"WandaVision" director Matt Shakman says that fans disgruntled by the reveal about Evan Peters' true role on the Marvel show should hang tight.

"For the fans that were disappointed, I'm just going to say: you know that those things are coming, right? The multiverse is coming. Mutants are coming. So, there you go," Shakman said in a new interview with Entertainment Tonight.

The director's comment came in light of the show's season finale that was released on Disney Plus on Friday.

During the action-packed episode, viewers finally got a concrete explanation for Peters' appearance on "WandaVision."

The actor, known for playing Quicksilver/Peter Maximoff in the "X-Men" movies, first popped up at the end of episode five. The appearance was surprising and gave fans hope that Peters was reprising his role as the speedy mutant, which would lend itself to the concept of the multiverse and would officially bring the X-Men into the MCU.

Insider's Kirsten Acuna suggested several possible explanations, including the possibility that Peters' fake Pietro - called Fietro by Agatha Harkness - could simply be a Westview random resident.

On the penultimate episode of season one, Agatha alluded to manipulating fake Pietro using "crystalline possession."

On the finale, it was revealed that this "recast" Pietro is the elusive Ralph who Agatha had been periodically referring to as her husband throughout the season.

Monica Rambeau learned that his full name is Ralph Bohner and he owned the house that Agatha was pretending was her own. Agatha had been controlling him using an enchanted necklace.

Shakman told ET that he "didn't have any regrets" about how he brought Peters into the series, despite fans who were disappointed that the actor's role on the show wasn't more significant.

Shakman said that Peters' inclusion on "WandaVision" served the sitcom style of the show and seamlessly fit into the idea that a grieving Wanda would be willing to believe that her brother, Pietro Maximoff (who was played by Aaron Taylor-Johnson and killed in "Age of Ultron"), was somehow back again.

"When Wanda sees Ralph at the door, she wants to see Pietro and she's willing to allow herself to see Pietro," Shakman said. "Which is, again, about grief and about how we grieve and the lengths that we're willing to go in order to try to bring back the people that we love."

The director also weighed in on the fan theory that Ralph is the mysterious person in witness protection that Jimmy Woo mentioned during episode four.

Shakman told ET that he's not able to speak to that idea "yet, but stay tuned."

Until more is revealed, fans are still hopeful that they'll see more of Peters.

As Shakman mentioned, we already know that the multiverse is going to become a focal point of the MCU going forward. The upcoming "Doctor Strange" sequel is titled "Doctor Strange in the Multiverse of Madness" and will feature the return of Elizabeth Olsen as Wanda Maximoff/Scarlet Witch.

Disney's acquisition of 20th Century Fox in 2019 also paves the way for mutants to enter the MCU.

Prior to that deal being made, Marvel Studios (owned by Disney) operated separately from Fox and therefore there were no mentions of mutants in the MCU.

2020's box office flop "New Mutants" marked Fox's final X-Men film. Disney's acquisition of the studio means that the X-Men entering the MCU is inevitable. It's simply a matter of time.