The MCU's Hulk may be an A-list Avenger, but Marvel Studios has barely showed Bruce Banner's backstory and the events that led to the Gamma monster's creation prior to The Incredible Hulk. A founding member of the MCU's Avengers, Hulk has left a mark on the MCU since his debut in 2008's The Incredible Hulk, after which he has remained a supporting character across several movies and his cousin's spinoff series, She-Hulk: Attorney At Law. Hulk has learned how to be a team player, controlled his monstrous nature, became a full-fledged hero, and merged the man with the monster before playing a key role in saving the universe.