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WandaVision Episode 4 Slipped An X-Men Reference Right Past You

Contains spoilers for WandaVision episode 4

In this week's new episode of WandaVision on Disney+, "We Interrupt the Program," viewers finally get a look at the world outside of Westview and the sitcom universe constructed for Wanda (Elizabeth Olsen) and Vision (Paul Bettany). Dr. Darcy Lewis (Kat Dennings) is working with the FBI, S.W.O.R.D., and other organizations to try to figure out what exactly is going on in this strange little suburb, and who is behind it. Thanks to Lewis, they notice the TV broadcast signal coming from the town, and are thus able to watch the activities of Wanda and Vision as we've seen them depicted so far.

Of course, it wouldn't be Marvel without many little Easter eggs and references scattered throughout the episode. With the expanded look at S.W.O.R.D. and the outside world, including a glimpse at the moment when everyone returned from "the Blip," there's a lot going on in WandaVision episode 4. So if you weren't paying extremely careful attention, you likely missed one specific reference to the newly repatriated X-Men and their comic book connection to Scarlet Witch. 

WandaVision calls back to X-Men's Alexander Lexington and M-Day

Once Lewis gets her hands on the frequencies coming out of Westview, she picks up on what's going on quite quickly. Understanding the purpose of the broadcast waves, Lewis experiments with a small-screened device able to capture the signal and pull up a fuzzy image of what looks like Wanda. Although Lewis later upgrades her home theater to watch the crazy sitcom of Wanda and Vision's life in better definition, the initial device she uses comes from a company called Lexington Instruments. At first glance, the name seems inconsequential, but we all should know by now that nothing in the MCU is ever inconsequential — especially in this series, which has been delivering symbolic and referential content at a clip. Every little detail matters. 

If you know your X-Men comics history, the name Lexington might ring a bell. Lexington Instruments is a reference to a comic book character named Alexander "Lex" Lexington. Lex first appears in 2006's X-Men vol. 2 #178. He's a mutant who serves in the military, and hides his ability before being forced to use his powers in the Sentinel Squad Program. Although the comics never specify what Lexington's ability is, his most important connection to WandaVision is the fact that he loses his powers on M-Day. 

M-Day is a major event in the comics in which Wanda uses her reality altering powers to rid the world of most of its mutants simply by uttering the phrase "No More Mutants." This happens in the famous comic book run called House of M, a storyline already referenced in WandaVision. In one of the wildest fan theories about the show, many fans believe the details of House of M may be the key to unlocking the series' mysteries, so we're guessing the Lexington namedrop isn't just a coincidence.