In fanfiction, Sabo's character might be developed to show more of his softer side towards Koala. For example, in the original he is very focused on the revolutionary cause, but in fanfiction he could be shown taking time for Koala and having more personal conversations with her.
Also, their relationship in fanfiction could be developed in a way that explores their past more deeply. Maybe they share memories of their early days in the Revolutionary Army that were not shown in the original story. This could give more depth to both of their characters as they reflect on how far they've come and how their relationship has changed over time.
One idea could be that Koala and Sabo team up on a mission to rescue some slaves. Koala's knowledge of the slave trade from her own past and Sabo's combat skills would make them a formidable duo. They could infiltrate a slave - trading stronghold, facing many challenges along the way. Sabo could use his Flame - Flame Fruit powers to fight off the guards, while Koala uses her intelligence to find the slaves and free them. This would not only strengthen their bond as comrades but also show their growth as characters in the One Piece universe.
One possible plotline could be Sabo and Koala going on a mission together for the Revolutionary Army. They face various challenges and in the process, their bond deepens. Maybe they have to infiltrate an enemy base and rely on each other's skills to succeed.
In fanfiction, Roxas might be developed to have more complex emotions about his existence. For example, he could struggle more with his identity as a Nobody and his connection to Sora in ways not fully explored in the game. Xion, on the other hand, could be given more backstory about her creation. Maybe the fanfiction delves deeper into the experiments that led to her existence.
In fanfiction, Cato might be developed as having a softer side. For example, towards Glimmer. In the original, he was mostly portrayed as a brutal and fierce competitor. But in fanfiction, he could show vulnerability when it comes to Glimmer, like caring about her safety more than just the victory. Glimmer could also be developed differently. Instead of just being a pretty face in the Games, she could be a strategic thinker, using her charm to manipulate not only the other tributes but also the Capitol audience.
Well, in fanfiction, their relationship might bring out different aspects of their personalities. Since they are married, Tony could be more protective and less of the joker he was in the original show. Ziva, on the other hand, might be more open about her emotions, especially when it comes to her relationship with Tony. This is different from the original show where she often kept her feelings bottled up. The married state in fanfiction gives them a new environment to grow and change as characters.
For fem Kuroko, her character could be developed with more emphasis on her femininity. She might use her charm or intuition in ways that male Kuroko didn't. For example, she could be more in tune with the emotions of her teammates and use that to boost team morale. Aomine, on the other hand, as a female could be developed with a different kind of competitiveness. Instead of just brute strength, she might use her intelligence and strategic thinking more, like finding ways to outwit opponents through psychological warfare.
One way their characters are developed differently in fanfiction is through their parenting styles. In the original series, since they die early, we don't really see them as parents. But in fanfiction, we can see different approaches. Minato could be the strict yet loving father, teaching Naruto advanced ninjutsu from a young age. Kushina could be the nurturing mother, always making sure Naruto is emotionally okay. Additionally, their characters can be developed in relation to the political situation of the village. They could be involved in secret political maneuvers to protect the village and Naruto's future as a potential great ninja.
Sasuke in fanfiction could be developed with more vulnerability. In the original series, he is often seen as stoic and brooding. But in fanfiction set in the ANBU world, he might show his fears and doubts more as he has to deal with the high - stakes and secrecy of ANBU missions. Sakura could be more assertive. In the original, she sometimes seems to be in Sasuke's shadow. Here, she could be an equal or even a leader in ANBU operations. The ANBU environment forces both of them to grow in new ways.
In fanfiction, their characters can be developed in various ways. For example, Kallen might be more open about her feelings towards Lelouch earlier than in the original series. Maybe she directly confronts him about her admiration and loyalty, which could lead to different relationship dynamics.
Well, in some fanfictions, Harry's relationship with werewolves could be explored in a much deeper way. He might develop a more empathetic side towards them, especially if he meets a werewolf who is not as bloodthirsty as the ones he has encountered before. Hermione could be developed to be more of a risk - taker. When it comes to werewolves, she might be willing to put herself in more dangerous situations to study them or help them, which is different from her usually cautious self in the original series.