re: Surprise character possibly confirmed for Avengers: Infinity War

Considering how much they screwed up the Silver Surfer in the FF movies, I could not be more excited. The Surfer is probably less powerful than Thanos with the Gauntlet, but he's absurdly powerful (which is why his comic is best when it leans into absurdity).

But it seems we're bringing the whole Jim Starlin cast together: Captain Marvel, Adam Warlock, Silver Surfer, Drax, and Thanos. All we need is Super Skrull.

And Captain Marvel will be set in the 80s/90s, but I'm willing to bet it ends with her going to the Kree Empire or the Negative Zone which would have kept her off the board for decades while also preventing her from aging. She will come back from the wherever to modern day in the Infinity War, and likely be a relative Deus Ex Machina to save the day in Avengers 4.

The best fan theory I've seen is that Nick Fury will recruit Ant-Man, Wasp, and Hawkeye (the three not on the poster and coincidentally, with their own movie coming out) to find Captain Marvel to aid in the Infinity War, which the Avengers will be losing badly. Ant-Man, after finding the original Wasp in his next movie, will be familiar with alternate dimensions. Captain Marvel will be the one to turn the tide, and then later replace the retiring (dead?) Captain America and Iron Man.