Although Mark Ruffalo hasn't headlined his own MCU solo film ... 1 / 7
... Bruce Banner and his alter ego the Hulk have enjoyed quite a character arc. 2 / 7
It began in 2008, with The Incredible Hulk, starring Edward Norton as Banner. 3 / 7
That continued in 2012 with Ruffalo's debut in the role in The Avengers. 4 / 7
The 2015 sequel, Age of Ultron, introduced a relationship with Black Widow ... 5 / 7
... while Thor: Ragnarok depicted a Hulk who could carry on a conversation. 6 / 7
But after his defeat by Thanos in Infinity War, the Hulk refused to show himself. 7 / 7