And how does one know that Captain America (Chris Evans) is fired up? The well-mannered Avenger breaks his rule and curses, saying, "Let's get that son of a bitch." Before the team gets into a spaceship to go find Thanos, Rocket (voiced by Bradley Cooper) asks who has never been to space, and Black Widow (Scarlett Johansson) raises her hand.

Marvel Studios' Avengers: Endgame is set to open April 26 and has broken presales records since tickets went on sale Tuesday. It's the culmination of 21 films dating back to 2008's Iron Man, and will alter the state of the Marvel Cinematic Universe.

The shape of the MCU is largely a mystery after this summer. Though Marvel has a number of projects in the works post-Endgame, only one (July's Spider-Man: Far From Home) has an official release date. Other films in development include sequels to Black Panther, Guardians of the Galaxy and Doctor Strange, as well as The Eternals and Shang-Chi. But it now has a whole slew of other characters newly available to it.

The CinemaCon presentation comes weeks after Disney closed the deal to acquire 21st Century Fox, which now makes characters such as the X-Men and Fantastic Four available to Marvel Studios for the first time. But before the X-Men are folded into the MCU, there are two Fox-produced movies scheduled to hit theaters: June's Dark Phoenix and August's New Mutants. There has been speculation that New Mutants, long delayed and rumored to be in need of reshoots, would not be granted a theatrical release (though it has a date set for Aug. 2) and would instead be relegated to a streaming service. However, the title was displayed as part of Disney's upcoming releases.

While the Fox X-Men universe will end with Dark Phoenix, Ryan Reynolds' Deadpool is expected to make the transition to Disney.

Disney's Alan Horn said early in his presentation that there would be more Deadpool to come, and joked about Reynolds' acquisition tweet that featured the character wearing Mickey Mouse ears on a school bus.

Fox's Emma Watts came out to introduce Dark Phoenix, calling it the "perfect sendoff for our X-Men team." The Marvel mutants have been at Fox since 2000's X-Men movie, which is credited with launching the modern era of superhero films.

Watts also noted that Fox will be providing plenty of tentpoles for Disney, now that the former will no longer oversee the Marvel properties, as those will fall under Marvel Studios head Kevin Feige.

"We intend to do our part, and it is in that spirit that we will continue to create new stories," she said, name-checking Kingsman, Alien, Planet of the Apes and Avatar.

— Aaron Couch contributed to this story.