You might’ve noticed Magneto didn’t get telepathy-blocking powers from his helmet anywhere until the first X-Men movie, and now screenwriter David Hayter (also known as the voice of Solid and Naked Snake) has revealed how that happened.
In this case, the man responsible for the first X-Men movie’s script has explained why Magneto’s helmet becoming one of his strongest assets against Charles Xavier became a thing.
The whole discussion becomes even funnier when you think about how Juggernaut already had a helmet which protected him from psychic attacks way earlier.
“It was just the helmet” was never considered until the live-action movie came out though.