Doctor Doom is a fictional character.
Doctor Doom . Though normally portrayed as a supervillain , since Civil War II in 2016 , Doom has been depicted as a superhero , taking up the mantle of Iron Man from Tony Stark , and going on to join the Avengers . The Marvel Universe is the shared universe where the stories in most American comic book titles and other media published by Marvel Entertainment take place . A supervillain is a variant of the villainous stock character archetype commonly found in American comic books , sometimes possessing superhuman abilities .