MCU Secret Invasion: Which Heroes Could Be Skrulls?

2. Bruce Banner/Hulk

Given the fact that the Skrulls can mimic not only the look of their targets but also their powers, it would make sense that they would seek out the most powerful of all of the heroes in the MCU. That not only gives them a powerful weapon, but it also takes one away from their enemy.

Hulk's self-imposed exile - which has accidentally led to him being captive on Sakaar - also offered the Skrull an opportunity to replace him without having to remove him at all, and the smart move would be to have the Hulk who appears in Infinity War be the impostor, with the real version still on Sakaar.

That could also go some way to explaining why Bruce Banner appears to have no memory of the years since his disappearance in Age Of Ultron. The Skrull could have intervened, wiped his memory and sent him into space knowing that he'd be forced to transform into Hulk to survive. And if nothing else, it would give the Skrull a big player in the inevitable final battle.