Captain America would be a great addition. His leadership and moral compass could guide Hulk and She - Hulk when they face difficult decisions. And his combat skills could come in handy during battles.
One key element is the power dynamic. Given their super - strength and large - scale capabilities, how they interact with each other in terms of power usage is often explored. For example, in some fanfictions, they might have to hold back their strength when being affectionate.
There could be a crossover where the Hulk's gamma - irradiated body has an unexpected reaction to the chakra in the Naruto world. Maybe his gamma energy mixes with chakra in a way that gives him new abilities or changes his appearance. This could lead to a whole new dynamic in the story, with both the Hulk and Naruto having to adapt to these changes while dealing with whatever threats come their way.
Well, regular Hulk fanfiction usually focuses on aspects like his superpowers, his relationships with other characters in the Marvel universe, and his heroic or anti - heroic deeds. However, 'hulk lemon fanfiction' (assuming 'lemon' is used in an inappropriate sense) would deviate from these positive and plot - driven elements and likely involve improper or adult - themed content which is not suitable for general discussion.
The Abomination could be a great main antagonist. He already has a history with the Hulk and his hatred for Hulk could extend to She - Hulk as well. He could be trying to create a new gamma - based weapon to finally defeat the Hulks once and for all.
Sure, She-Hulk is related to Hulk. Jennifer Walters, aka She-Hulk, got her powers because of a blood transfusion from her cousin Bruce Banner, who is Hulk. This connection is a key part of their storylines in the comics.
Well, Hulk has raw physical power that's almost unrivaled. Naruto, on the other hand, has his chakra and ninja skills. In some fanfictions, Naruto might initially be at a disadvantage due to Hulk's sheer strength. But Naruto could use his intelligence and his ability to quickly adapt to situations. For example, he could use his shadow clone jutsu to confuse the Hulk and then find a weakness.