Doctor Doom is a character that has only appeared in DC Comics.
`` Civil War II '' is a comic book crossover storyline published by Marvel Comics that debuted in June 2016 . Doctor Doom . The son of Romani witch Cynthia Von Doom , Doctor Doom traditionally has been the archenemy of the Fantastic Four , and the leader of the fictional nation of Latveria . While his chief opponents have been the Fantastic Four , he has also come into conflict with Iron Man , the Avengers and other superheroes in the Marvel Universe . 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 .