For anyone not keeping up with WandaVision casting, "Geraldine" being revealed as an adult version of Captain Marvel's Monica Rambeau would have come as a major surprise. In order to reintroduce the character while also establishing when this story takes place, we first met with Monica as she returned from the dead during the Blip (shortly before Avengers: Endgame's final battle).
It was an awesome cold opening, and one which has received widespread acclaim from fans.
Talking to Entertainment Tonight, WandaVision showrunner Jac Schaeffer elaborated on the decision to revisit the Blip, and why that was used to establish the show's place in the MCU timeline.
"Our priority was introducing Monica. That was always what we wanted to do well at the top of the show. Second to that, our priority was the 180 of this episode being entirely separate from what we’ve seen," Schaeffer explains in the video below. "But we also wanted to answer the question of, ‘Where are we in the MCU timeline?’ So this idea seemed to satisfy all of those things all at once. It set up tonally that we’re in a dramatic scenario, a more grounded scenario. We learned so much about Monica and what she’s dealing with in that cold open. And then, of course, it’s always exciting to be able to approach MCU canon and shed new light on it."
It's thought that The Falcon and The Winter Soldier will also revisit what happened when half of Earth's population suddenly returned from the dead, an event you have to believe wasn't quite as simple as it sounds. That was evident from Monica's discovery that her mom had died while she was missing, and this event could end up being a recurring theme throughout Phase 4.
Check out the full interview with Schaeffer below: