What two persons created the fictional anti-hero who appears in the Marvel Comics and is the sone of Romani witch Cynthia VonDoom?
Doom 2099:  The character is based on Doctor Doom, created by Stan Lee and Jack Kirby. 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.
i don't know