Lol, I'm a die hard to the core, but I doubt even I could stomach that for a full movie
No, he's
one version of the Hulk
t:. He wasn't originally conceived that way, so to be technical, the Gray Hulk
is the Hulk.
That being said, the Savage Hulk is the most popular iteration of course, and this is why I we got two motion pictures of him already, along with a TV show that while deviating from the strength, kept the intellect level close enough to the Savage Hulk.
The Hulk is presumably under control now, given the ending of TIH. The whole basis of the
physical incarnation of the Hulk is Banner's inner demons and turmoil, in
all of their forms, which explains the different appearances throughout the years.
The Savage Hulk just represents one side, the infantile, simple gratification recesses of the young Bruce Banner's repressed rage. With the Hulk under his control, I don't see why another version of this repressed personality, the mischievous, cunning & self centered Gray Hulk, shouldn't emerge.