

If that seems drastic considering how many characters in modern comics share even more specific qualities, and how many superheroes were ripping off Superman even back in the '40s, bear in mind that National had a history of suing companies that published heroes it felt were too close to Superman, successfully putting a stop to the publication of Fox's Wonder Man and Fawcett's pre-Captain Marvel hero Master Man. Seeing the similarities between the characters, National Comics Publications (Superman's publisher who later became DC) sued Fawcett, Captain Marvel's publisher, over copyright infringement against Fawcett, who published Captain Marvel.

Like Superman, the first major American superhero (and the character that defined most of the genre tropes), the original 1939 incarnation of Captain Marvel could fly, had super strength and speed, and wore a costume of tights and a cape to rescue people.
