Secrets of the Marvel Universe.
Fans can't get enough of a world where space-hopping Guardians of the Galaxy might turn up alongside earthbound Avengers, or Doctor Strange and Black Panther could cross paths via a mind-bending rift in the space-time continuum. Other studios, most notably Warner Bros., with the Justice League, have tried to create their own web of interconnected characters. Why have so many failed to achieve Marvel's heights? "Simple," said Joe Russo, co-director of Avengers 3 and 4. "They don't have a Kevin."
While Feige refused to reveal any details about the characters and stories Marvel has yet to introduce, he did promise a definitive end to the franchise that built Marvel. Avengers 4, he said, will "bring things you've never seen in superhero films: a finale." This may mean a lot of dead Avengers at the hands of the villain Thanos, who has appeared sporadically and tantalizingly since the first Avengers movie back in 2012. But the Marvel Cinematic Universe will live on. "There will be two distinct periods. Everything before Avengers 4 and everything after. I know it will not be in ways people are expecting," Feige teased.