Avengers: Age Of Ultron - 32 Easter Eggs, In-Jokes And References
13. Hulk Hates Banner
During the fan-baiting Hulk fight sequence, there's a nod to Peter David's Hulk comics, which show the two sides of Banners' personality as fractured and at odds with one another.
As Mark Ruffalo confirmed:
"There's a very cool thing happening in the film: Hulk is as afraid of Banner as Banner is afraid of Hulk. Both of these guys are obviously the same guy, and they have got to come to peace somehow with each other. And this confrontation is building across this film."
When Stark attempts to reason with Hulk when he's on his berserker rage, he makes the mistake of bringing up Bruce, which only enrages Hulk more at the mention of "puny Banner."