The Marvel Cinematic Universe has built a reputation for rewarding eagle-eyed fans. Nearly every trailer hides clues, references and comic book callbacks that become important later. Avengers Doomsday will be releasing in theatres in 2026. (Screengrab | Marvel Entertainment Youtube) The first trailer for Avengers: Doomsday is no exception. The two-minute preview is packed with hidden details that hint at the film’s story, introduce comic-accurate costumes and tease Doctor Doom’s arrival. Here are 12 easter eggs that you may have looked past: 1. Three colliding Earths at Avengers Tower The trailer shows three connected Earths heading toward Avengers Tower. Fans believe these represent Earth-616, Earth-828, and the X-Men universe crashing into each other. If true, the scene could be teasing an Incursion, where multiple universes collide, a storyline lifted directly from Marvel Comics. 2. Thor finally goes for the head: Thor charges straight at Doctor Doom and swings Stormbreaker at his head. It is a clear callback to Avengers: Infinity War, when Thor admitted he should have “gone for the head” against Thanos. The bigger …