Today would’ve been Jack Kirby’s 97th birthday, we have Jack to thank for probably the majority of Marvel superheroes you’ve seen on the big screen (plus a hell of a lot you haven’t).
Captain America is Jack’s along with Joe Simon, and with Stan Lee he created Iron Man, Hulk, Thor, Nick Fury, the Avengers, the X-Men, the Fantastic Four, the Silver Surfer, Loki, Galactus, and (a considerably more verbose) Groot. That doesn’t even cover his characters that have appeared on screen, seriously, he helped create a lot of characters.