10 Biggest MCU Surprises We Didn't See Coming

11. Evan Peters Showing Up In WandaVision

In Wandavision, we see Wanda Maximoff devastated by the loss she endured during Avengers: Age Of Ultron and Infinity War. Her grief mixes with her reality-manipulation powers to create an alternate universe pocket-dimension engulfing an entire town. Inside this bubble, known as the Hex, reality was whatever Wanda desired.

This makes it confusing when, in the episode entitled On A Very Special Episode..., Wanda's dead brother Pietro (aka Quicksilver), who was killed in Age Of Ultron, reappears, not as he looked before, but rather as he looked in the X-Men films, played by Evan Peters. Before this moment, the X-Men films were considered completely non-canon to the MCU, but now that was all thrown into question.

Theories of the multiverse becoming a huge part of the films were already rampant when this episode came out and seeing Quicksilver being portrayed as his X-Men variant made it seem like the X-Men universe was leaking into the MCU.

Unfortunately for the theorists, the twist ending of WandaVision seemed to confirm that this version of Pietro was merely a random guy named Ralph Bohner, who was recast as Pietro by Agatha Harkness. We still wonder, though, why he would have been cast as the actor from the X-Men films, but we may learn more about this in the upcoming film Doctor Strange In The Multiverse Of Madness, where Wanda will appear.