Or should that only be Juggernaut's helmet. As you know, if you are an X-Men fan, Magneto's helmet didn't block telepaths until the movies and the subsequent retcons in the comics. Do you think it was a good idea or it takes away from Juggernaut's uniqueness and Magneto already having a talent to resist psychic attacks? I'm actually leaning towards the latter now. Not every change in other media needs to be reflected in the comics. If you want reasoning of why he wears it, he also wears armor through his career. And he did indeed use the helmet to enable psychic powers within himself. But a helmet makes just as much sense as armor and you can say coating him in metal is good protection. But what do you think? I assume a lot of people will disagree.