After months of vague teasers that revealed little, Marvel has finally released the first full trailer for Avengers: Doomsday. Fans finally get to see the assembled team reacting to a threat that seems to overwhelm their usual tactics. Why the Wait for a Real Trailer? The release of this trailer suggests Marvel finally feels confident enough to show audiences something substantial. — YouTube comment on the official Marvel trailerWhat This MeansFor Marvel fans, this trailer kicks off the real promotional campaign.