One possible character development for Loki is that he becomes more empathetic. Hulk's simple and straightforward emotions could rub off on Loki. He might start to feel genuine remorse for his past misdeeds. On Hulk's part, he could become more diplomatic. Working with Loki, who is a master of manipulation and politics in a way, Hulk could learn to use words as well as his fists to solve problems in the fanfiction.
Well, for Loki, his development could be about finding a new purpose. Instead of just causing chaos, he has someone to care for. He might become more selfless. The baby Frost Giant, on the other hand, could start to show signs of leadership as it grows. It could learn from Loki's cunning and use it for positive things in the future, like uniting the Frost Giants in a more harmonious way.
One great 'Hulk x Loki fanfiction' is 'The Unlikely Bond'. It shows an interesting dynamic between the two characters where they are forced to work together on a mission. Their clashing personalities create a lot of tension and some really humorous moments.
Both characters could develop their relationship in terms of trust. Naruto, who is generally trusting, could face some challenges that make him question Karin at first. Karin, on the other hand, could learn to be more open with Naruto. Their journey towards building a full - fledged trust could be the central theme of the fanfiction, with various events and conflicts testing and strengthening their bond.
Wolverine could develop more patience. Usually a lone wolf, being around Nightcrawler's more upbeat and spiritual nature might force him to slow down and think more. For example, Nightcrawler's teleportation ability might make Wolverine rely on a different kind of strategy in combat rather than just his brute force.
In a Broly x Gohan fanfiction, Gohan could develop a new understanding of power. Instead of just relying on his academic knowledge and some of his traditional training, he could learn from Broly that power can also be about pure instinct. Meanwhile, Broly could develop his mental faculties. Gohan might introduce Broly to things like meditation or mental focus exercises. As a result, Broly becomes less of a mindless brute when it comes to fighting and more of a thinking fighter, which would be a significant character development for him.
Naruto could develop more maturity under Tsunade's influence. Tsunade, being an experienced and strong - willed character, can teach Naruto how to better control his emotions in difficult situations.
He might develop new combat skills. Loki's familia members could teach him different fighting styles or strategies. For example, he could learn from Finn how to better lead in a group combat situation, which would be a significant change from his more solo - focused adventures before.
Kakashi could develop a stronger sense of responsibility towards family. He has always been dedicated to his village and his students, but now he has a new kind of commitment. He might start to think about a future beyond his shinobi duties. Sakura may grow in her self - confidence. She has always been strong, but this new situation of carrying a child, especially with Kakashi, could make her believe in herself even more in different aspects, like her relationship - building skills and her ability to create a stable family environment.
For Naruto, he could develop from being a bit reckless as a vampire - ninja to more calculated. Meeting Moka and learning about the vampire world makes him understand the importance of self - control, especially when it comes to his new vampire powers. For Moka, she could become more open - minded. Initially, she might be hesitant about Naruto's ninja ways, but as they interact more, she starts to appreciate the value of things like teamwork and loyalty that Naruto brings from the ninja world.
They could both develop a stronger sense of loyalty towards each other. As they face various challenges together, they might find that they can count on one another. This loyalty could then extend to them being more involved in each other's lives, like Tatsuya helping Masaki with his family issues (if any in the fanfiction world) and Masaki standing up for Tatsuya when he is wrongly accused.