The Casual Marvel Fan's Guide to em WandaVision /em Episode 5

This article contains spoilers for the first five episodes of WandaVision. Let's start with the biggest question. What was the deal with "Pietro" at the end of the episode? That was Evan Peters reprising his role as the late Pietro Maximoff, Wanda's brother, but--and here's the twist--it's not the Pietro Maximoff we've seen in the Marvel Cinematic Universe. The MCU's Pietro, played by Aaron Taylor-Johnson, died in Avengers: Age of Ultron.