All the questions and theories we have after watching the first trailer for Avengers: Doomsday - Nine

Theory Briefing

• The trailer suggests Doctor Doom may initially ally with the Avengers against a greater threat, flipping his classic villain role.
• One theory holds that Doom's alliance is a manipulation — using the heroes to consolidate his own power before turning on them.
• The trailer leaves open whether Doom is the ultimate antagonist or a reluctant partner forced by a threat even he can't face alone.