Avengers: Doomsday will see dozens of heroes cross paths, but two villains may be set to collide if this theory about Doctor Doom's mother pans out.

By the end of next year, Robert Downey Jr. will have done both when he finally arrives in theaters as the leader of Latveria and metal-plated bad guy, Victor von Doom. Bringing back the star power and charisma he let rip as Iron Man and using it for evil in the franchise he helped build,