It’s not quite the Mandela Effect. How about the Magneto Effect? Turns out, Magneto’s helmet having the ability to block Charles Xavier’s telepathic powers actually hasn’t been around all that long. Instead, its origins lie in a behind-the-scenes interaction during the production of 2000’s X-Men movie.
"This happened because the director said one day, ‘Why couldn’t Xavier just make Magneto go to sleep or something?’" the movie’s writer – and OG Solid Snake voice actor – David Hayter wrote on Twitter in reply to an incredulous post about how Magneto’s telepathy blocking helmet wasn’t around until the movies.
