There are plenty of plot holes in the Marvel Cinematic Universe ... He could have asked Doctor Strange to make everyone forget Mysterio. One cannot go around un-spidering alternate universe ...

An upset Marvel gave warnings to WWE when Rey Mysterio would dress up as a comic character, so the superstar had to stop.

However, he's had to slow down on wearing those after WWE received cease and desist letters from Marvel! Talking to Adrian Hernandez (via TheRingReport.com), Mysterio explained why he had to move ...

So, it is unclear what kind of Marvel gear Rey Mysterio is planning for WWE’s WrestleMania 41. He has previously worn outfits inspired by Captain America, Spider-Man, and Daredevil.