Promo art for the movie 'Avengers: Doomsday' has been revealed, showing Doctor Doom and various heroes. The art appears to feature a large cast, including characters from the Avengers, X-Men, and Fantastic Four, as well as Loki. The origin of the promo art is unclear, with some reports suggesting it was unveiled at an expo, while others indicate it may have been leaked from a production wrap gift.