The WandaVision Detail That Potentially Teases Monica Rambeau's Marvel Future

We first met the adorable young Monica Rambeau in the '90s, during the events of Captain Marvel. She's the daughter of Maria (Lashana Lynch) and a huge fan of Carol Danvers (Brie Larson), even before Danvers turns into the energy-wielding, world-saving superhero Captain Marvel. Now, Monica is all grown up and becoming an integral part of the MCU in WandaVision. The show's fourth episode, "We Interrupt This Program," officially introduces the adult Captain Monica Rambeau (Teyonah Parris), astronaut and S.W.O.R.D. agent.

Up until this point, she's been befriending Wanda (Elizabeth Olsen) using the name Geraldine in the strange TV sitcom reality of the show's earlier episodes. However, after Monica mentinoed Pietro's death at the hands of Ultron, Wanda forced her out of Westview and back into the real world. "We Interrupt This Program" rewinds Monica's story a few weeks to show just how she got to Westview in the first place — but it also includes a hint to her Marvel Cinematic Universe future in a plaque dedicated to her late mother.

The episode begins with Monica reappearing on Earth after fading into dust from the Snap. In the chaos of a packed hospital, she learns of her mother's fate and then returns to her job at the intelligence agency S.W.O.R.D. While entering the facilities, she passes a plaque that reads "Maria 'Photon' Rambeau," which is a small but incredibly important detail. "Photon" was Maria's call sign, as she was an Air Force pilot before she founded S.W.O.R.D., but the nickname has a deeper meaning for Monica. Or, at least, for her comic-book counterpart.

In the comics, Monica gained the power to change into pure energy at will and joined the Avengers to become a superhero. At first, she used the name Captain Marvel, which had previously belonged to the alien Mar-Vell. Later, however, she renamed herself Photon.

The inclusion of this name in WandaVision as her mother's call sign could be a hint that Monica will become superpowered and take the name for her own alias. It wouldn't be the first time a call sign was repurposed in the MCU, as Nick Fury (Samuel L. Jackson) used Carol Danvers' call sign "Avenger" to name the Avengers. Maybe by the time Monica teams up with Carol again in Captain Marvel 2, she'll have powers of her own, because at this point anything could happen in WandaVision's remaining episodes.