Halloween brought an unexpected Marvel crossover moment, but this time, the superheroes switched identities. With Avengers: Doomsday gearing up for its theatrical release on December 18, Robert Downey Jr. and Pedro Pascal gave fans a fun glimpse of their off-screen camaraderie. Related Story: Avengers: Doomsday to release in India a day early! Robert Downey Jr and Chris Evans send Diwali wishes, watch Avengers: Doomsday Stars Switch Superhero Identities!