Marvel fans have certainly grumbled about Doctor Doom's sudden debut in Avengers: Doomsday, but Marvel Studios president Kevin Feige thinks it mirrors the build up of Thanos on the road to Avengers: Infinity War.
"The 'Thanos buildup' has built up in people's heads over the years," Feige offered to Brandon Davis at San Diego Comic-Con. "He sat on a chair at the end of [Guardians of the Galaxy]; he put on a gauntlet and said 'I'll do it myself', and he yelled at Ronan [the Accuser] on a video screen briefly. That was kind of it."
