Yes, there are some hints of a special relationship between them. In the movies and comics, they share a unique bond. Hulk seems to have a certain level of protectiveness towards Black Widow, and she is one of the few who can somewhat reach out to the Hulk within Bruce Banner.
In the Marvel realm, the idea of a Black Widow and Hulk love story is an interesting concept. Their relationship was nuanced. Black Widow's ability to interact with Hulk on a different level than most was a sign of something special. While it may not have been a full - blown love affair like some other superhero pairs, there were elements of mutual respect, trust, and perhaps a bit of unspoken attraction. This was shown in their interactions where Black Widow could reach out to the Hulk in ways others couldn't.
Well, it could imply that the Hulk, with his complex personality, has an interest in Tony Stark's character as portrayed in fan - created stories. Maybe he sees something in Tony's genius or his heroic yet flawed nature that fascinates him.
In the Marvel universe, Hulk and Black Widow had a complex relationship, but it wasn't really a typical 'love story' in the romantic sense. They had a connection based on their shared experiences as Avengers. However, the idea of a full - fledged love story between them was cut short mainly because of the nature of Hulk's character. He is often more of a brute force, and his transformations made a stable relationship difficult. Also, Black Widow had her own set of storylines and relationships that took precedence in different story arcs.
Hulk in DC fanfiction could have different relationships. In Marvel, he has his own set of friends and foes. But in DC fanfic, he might form new alliances, like with Batman who could be intrigued by Hulk's dual - nature. Also, his enemies could include DC villains like Darkseid, and his battles with them would be very different from his Marvel battles. The DC villains have different motives and powers, which would change how Hulk reacts and fights.
The height of the Grey Hulk varies depending on the comic storyline and artist's interpretation. But generally, he's depicted as being quite large and imposing.
Well, the 'Future Imperfect' storyline is really cool. In it, the Grey Hulk from an alternate future is a tyrant ruling over a post - apocalyptic world. It's a very dark and interesting take on the character. Also, stories where the Grey Hulk has to deal with his own identity crisis, like trying to figure out his place between being Bruce Banner and this grey - skinned behemoth, are quite engaging.
The separation of the Hulk and Banner varies in Marvel comics. Sometimes, external forces or internal conflicts cause them to split, but it's not a consistent occurrence throughout all comics.