An Avengers: Infinity War. This means that after missing action for the most of Avengers 3, Bruce Banner's green-rage alter-ego will inevitably return to help take down the Mad Titan.
Emerging in Taika Waititi's Avengers: Age of Ultron, the Hulk was living the gladiator life in Sakaar being the Grandmaster's unbeatable champion. That was until Thor roped him in to help defeat Hela and save the Asgardians. They succeeded on their mission, but even before they were able to make their way to Earth, they were hijacked by Thanos who was looking for the Tesseract/Space Stone that Loki had. Infinity War opened with a battle between the Mad Titan and the Hulk, with the latter easily beaten and sent crashing to the Sanctum Sanctorum bearing the news that the villain and his men were coming. This set the events of the movie in motion, but fans never saw the Hulk for the rest of the movie.
Related: Is Hulk Strong Enough To Defeat Thanos In The MCU?
Given this, one of the burning mysteries in Endgame surrounds the expected return of the Hulk. And now, fans may have an inkling when the transformation happens thanks to a tie-in figures for the movie. The set offers glimpses of Iron Man, Captain America, Black Widow, Thanos and a raging Hulk, wearing what seems to be his brand new costume. The Mad Titan's toy stepping on the Avengers' logo somehow confirms that the Avengers HQ will be the back drop for an action set piece in the movie. This insinuates that Bruce finally turns into his alter-ego to help his teammates battle the villain in their own turf. Check the official Diamond Select figures to see for yourself (hat tip CBR)
Endgame's Avengers HQ battle has been teased by a couple of two-pack Funko Pop is any indication, he'll have another crack at the villain in Endgame.
While many are waiting for Banner's transformation to Hulk, it's also important to learn what really caused their discord in Infinity War. Assuming that they survive past the events of Avengers: Endgame, it will be pivotal in what their dynamic will be moving forward. Ragnarok revealed a more intuitive Hulk and from the looks of it, Banner is able to retain some memories when he's his alter-ego evidenced by his recollection of Thanos' attack on the Asgardian refugee ship.
More: Avengers: Endgame May Show Infinity War’s Biggest Missing Scene
Source: CBR