Leaked concept art has ignited Marvel fandom, depicting Robert Downey Jr. as Doctor Doom in 'Avengers: Doomsday.' The image showcases a reimagined armour with an arc-reactor chest plate ...

The art in question showed, among other things, Doctor Doom (Robert Downey ... while another shows the robot Jocasta, or possibly a female Ultron. If the "Avengers" concept art isn't genuine ...