Blood Brothers (comics) Blood Brothers (comics) The Blood Brothers are fictional characters appearing in American comic books published by Marvel Comics. The Blood Brothers first appeared in "Iron Man" #55 (Feb. 1973) and were created by Jim Starlin. Following their debut, the Blood Brothers returned in a Starlin/Friedrich story in "Marvel Feature" #12 (Nov. 1973), again fighting the superhero Iron Man, here teamed with Fantastic Four member The Thing. The Blood Brothers continued as Iron Man antagonists in "Iron Man" #88-89 (Aug.-Oct. 1976), then disappeared from publication for several years before resurfacing to battle the titular superhero team in "The Avengers" #252-253 (Feb.
Superhero comics World War II and the end of the Great Depression. In comics format, superpowered and costumed heroes like Popeye and The Phantom had appeared in newspaper comic strips for several years prior to Superman. The masked detective The Clock first appeared in the comic book Funny Pages #6 (Nov. 1936). In the Great Depression and World War II era the first Superhero Comics appeared, the most popular being Superman, Batman, Captain Marvel, Wonder Woman and Captain America. After World War II superhero comic books gradually declined in popularity, their sales hindered in part by the publication of "Seduction of the