Bettany’s comments will no doubt inspire discussion amongst fans, leading to speculation about the matter. It is worth mentioning that WandaVision is still part of the larger MCU, and it’s a given that some characters from elsewhere in the MCU could appear (unexpectedly) in the show.
In an interview with Black Girl Nerds, Vision actor Paul Bettany revealed that he was able to work with an actor that he’s been eyeing to work with for quite some time now in WandaVision. The MCU veteran also teased that they “have some real fireworks together,” presumably sometime after the first three episodes of the series:
“ The stuff that I can’t [tell] you about where I get to work with an actor is gonna be a surprise for everybody. I get to work with an actor that I’ve been wanting to work with forever. It’s just unbelievable, and we have some real fireworks together.”
Based on previous rumors, there’s a good chance that the actor that Bettany is pertaining to is none other than Evan Peters. It was previously reported that the X-Men actor will make an appearance as a “key character” in WandaVision, but details about his role are still being kept under wraps.