So far, WandaVision has been one wild ride. At the tail end of Episode 5, we’re hit with a shocking surprise cameo from Wanda’s brother Pietro AKA Quicksilver. What makes this appearance so uncanny is that Pietro isn't portrayed by his MCU actor Aaron Taylor-Johnson, but his X-Men counterpart Evan Peters. But why? As Darcy (Kat Dennings) puts it, it's a “recast” in the squeaky clean suburbia of Wanda's imaginings. Speaking with Marvel.com, showrunner Jac Schaeffer explained the thought process behind bringing Quicksilver — who previously perished in Avengers: Age of Ultron — to the Disney+ show. “We were like, how in the world are we going to make this make logical sense?” Schaeffer said. “Because that's the thing, you can hatch a million great ideas, but to make them land, to make them be grounded, to make them feel organic to the larger story.”