You won't find a more perfectly adapted, visually definitive adaptation of a superhero on film than with Marvel's Iron Man. While Robert Downey, Jr.'s snarky, nuanced Tony Stark practically rewrote the character's entire comic persona, his armor was equally influential on its source material, proving that fans were willing to accept and embrace a hot-rod inspired, nuts'n'bolts'n'circuitboards take on the iron Avenger.
This is a tricky one, since Iron Man has technically gone through a number of different designs over the years, as the outfit is always evolving. It is difficult to pinpoint precisely which armor is the best, so we have decided to pull back a bit and note that the more general "yellow and gold" design is what we're going to celebrate here. You see, when Iron Man first debuted, he wore what looked to just be a suit of big, bulky, gray iron. When he became a regular superhero, Marvel tried to fix that design flaw by literally just spray-painting the armor gold. "Oh no, he's hideous!" "Oh, never mind. He's spray-painted gold. It looks great now!" Then Steve Ditko designed a new armor that worked red into the design and it really clicked.
Vartox belongs on this list, not because of his sexy nature, but because of how he was created to be sexy and ultimately failed. Unfortunately, over the years, the sexy nature of his design was lost, and the ridiculous costume and silly look defined the character. His look is also lampooned a bit in his appearance in “Power Girl.” There, he tries to woo Power Girl into helping him repopulate his home world. He dons a black leather speedo and see-thru robe, trying to show how sexy he is. Unlike others on this list who are actual sex symbols, Vartox is here because he was created to be a sex symbol, but fans never really bought into it.
She-Ra - who first appeared in 1985 in the Filmation movie The Secret of the Sword and the Filmation cartoon series She-Ra: Princess of Power - is, of course, the sister of He-Man. Wielding the Sword of Protection, she is granted similar powers to her brother - superhuman strength and durability, for example - as well a few more esoteric abilities, like healing and the ability to speak to animals.
As noted earlier, patriotic-themed heroes were hot in the early 1940s. America was going through a strange period of both isolationism and nationalism at the same time. Americans were really proud of their country, but also didn't want to get involved in the war in Europe. Patriotic-themed heroes captured that feel, by having noble American heroes defeat villains who dared to come over here to mess with us. Things got bolder, though, when Timely Comics introduced Captain America, who broke out of the isolationist viewpoints by having the lead character punch out Adolf Hitler on the cover of the first issue, a full year before the United States actually went to war with Nazi Germany!