Fans have interesting theories about how RDJ as Doctor Doom will fit into the Avengers alongside his Tony Stark.

Loki Could Be a Major Threat to Doctor Doom in Doomsday . After Loki was confirmed as one of the characters who will stand ...

A "first look" at Robert Downey Jr.'s Doctor Doom in Avengers: Doomsday at the Disney Blockbuster Consumer Products panel has ...