Premise: Doctor Victor Von Doom ( or simply Doctor Doom ) is a fictional supervillain appearing in American comic books published by Marvel Comics . 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 .
Hypothesis: Doctor Doom is the leader of the fictional European nation of Latveria.
Label: ENTAILMENT