Robert Downey Jr. and Pedro Pascal Swap Places for Halloween With Mister Fantastic and Doctor Doom Costumes

Halloween had no shortage of viral costumes, but Robert Downey Jr. and Pedro Pascal might have taken the crown by swapping places as Mister Fantastic and Doctor Doom. Downey Jr. set Marvel feeds on fire late last night when he posted video of him and Pascal sharing their night dressed as their characters in next month's Avengers: Doomsday . Instead of playing Victor von Doom, though, he dressed up in Reed Richards' retro-themed blue outfit, with Pascal dropping his superhero attire to sport Doom's iconic metal mask.