The Story of Bruce Banner/Hulk (Marvel Cinematic Universe)

Chitauri Invasion: Battle of New York

Bruce arrived during the midst of the Battle of New York, where he apologized to Natasha for attacking her earlier. As Captain America informed Iron Man that the latter's prediction of Banner returning had come true, Iron Man informed them that he was leading an enemy towards them. As the Avengers witnessed the Leviathan heading their way, Banner made his way towards the creature. As Captain America claimed that now would be a good time for Bruce to get angry, Bruce responded that his secret to learning how to induce a controlled transformation was that he was always angry. Banner then instantly transformed into Hulk, stopping the Leviathan with one punch, causing its armor plates to fall off and allowing Iron Man to kill it. Hulk then roared out loud as he joined the Avengers, and was tasked by Captain America to "smash" the Chitauri.

Hulk threw himself at the Chitauri army, immediately killing many soldiers climbing buildings, using his incredible strength and leaping abilities he was able to leap high in the air and hit the Chitauri Chariots out of the sky. Landing on the streets on New York, Hulk repeatedly smashed a car on top of a Chitauri soldier, before furiously ripping off the tire and jumping on the car as he continued smashing his enemies. Hulk also killed several Leviathan creatures, battling on top of one alongside Thor, together they killed it and as they took a moment to catch their breath, Hulk punched him across the room, getting revenge for their earlier fight.

Hulk then entered the Stark Tower and threw Loki against the wall. Loki screamed at Hulk that Hulk was unworthy to fight him, not listening to the speech Hulk beat Loki into submission. Hulk left Loki unable to move, said "Puny God", and rejoined the battle. Hulk became surrounded by Chitauri Chariots who all fired down at him together. As the battle looked almost hopeless, the World Security Council eventually sent a missile to destroy Manhattan.

Iron Man flew the missile to the Wormhole, destroying the Chitauri ship and thus killed all the other soldiers. He was able to escape the closing Wormhole but his suit shut down in the process. Hulk caught Iron Man as he fell and brought him to the other Avengers. For a moment it seemed Tony had made the ultimate sacrifice and had suffocated in space, however, Hulk roared in his face, waking him up.