Captain America himself
You know what they say: if it ain’t broke, don’t fix it. Some classics never go out of style, and Captain America is the perfect example. The all-American hero has been a staple in all of Marvel’s productions since he was first created over 80 years ago.
That’s right; he’s one of Marvel Comic’s most veteran characters. He was introduced in Captain America Comics #1, which came out in 1941. Bucky Barnes and Red Skull also made an appearance in that initial volume. Oh, and he was already punching Nazis.