Poll Suggestion: The Most Iconic Helmets

Intro: Which of these helmets is the most iconic? (Click here to watch the images as a slideshow.) Please tell us here. Suggestions: There were 2 helmet polls before: "Helmets" (Which do you like most?) and "Villains With Helmets" (Which is your favorite?) But this is about the most iconic helmet. So please only iconic helmets, not just from a guy no one remembers but the helmet looks cool. I want to keep the options below 21, if possible, so please suggest only the best. Remember: A mask is not a helmet (Batman, Jason, etc.) List: https://www.imdb.com/list/ls4103513808/ Poll: TBD