Imitation is the sincerest form of flattery, right? So, it's not a surprise when there are two main titans in the comic book industry that there be some... similarities.
Be it a broad generalization (team of gifted misfits fighting for those that hate them... Doom Patrol/X-Men) or... really specific, like cat burglars who don black spandex suits and team-up and occasionally sleep with their sometimes rival while walking the line between right and wrong (Catwoman/Black Cat).
Marvel and DC have even acknowledged these... coincidences at times, like the Amalgam universe where they met their alternate universe counterpart. We've decided to highlight just how bad it can get at times, these are the most shameless Marvel and DC analogs.
Similarities: Black latex clad cat-thieves who commonly gets romantically involved with their sometimes enemy/sometimes ally.
Catwoman first appearance: Batman #1 in Spring 1940
Black Cat first appearance: The Amazing Spider-Man #194 in July 1979
Similarities: Arrogant, brash, not well liked, undersea titans who rule their own kingdom with smarm and charm.
Aquaman first appearance: More Fun Comics #73 in November 1941
Namor first appearance: Motion Picture Funnies Weekly in April 1939
Similarities: Giant, all powerful, brutish destroyer of entire worlds and galaxies.
Darkseid first appearance: Forever People #1 in February 1971
Thanos first appearance: Iron Man #55 in February 1973
Similarities: Stretchy, elastic-y super geniuses.
Elongating Man first appearance: The Flash #112 in May 1960
Mr. Fantastic first appearance: The Fantastic Four #1 in November 1961