And now we have Doctor Strange.
Prior to the release of the Doctor Strange movie this November, Avengers Infinity War writers Christopher Markus and Stephen McFeely confirm the Sorcerer Supreme will be lending the heroes a hand.
While discussing the hectic schedule The Avengers: Infinity War will produce, the pair mention how difficult it is to schedule the actors as they are all huge stars, with mention of Benedict Cumberbatch.
"You'll do movie one in the morning, and then movie two in the afternoon," McFeely said in a podcast. "It's because there are so many movie stars. Like the scheduling has got to be a nightmare. You can't just say 'Benedict Cumberbatch' - or whoever - 'come to Atlanta for nine months.' You know. It can't work that way."
Both The Avengers: Infinity War movies will be filming at the same time; Part 1 hits May 4, 2018 followed by Part 2 on May 3, 2019.
Doctor Strange has a November 4, 2016 release.