In the fanfiction, Snape might be developed with more of a sense of humor. For example, in the original series, he is very dour, but in the fanfiction, his interactions with Harry in the context of a risky business situation could bring out a side of him that cracks jokes or uses sarcasm in a more light - hearted way. This would be a big departure from his usually serious self in the books.
Harry could be developed as more independent and resourceful. In the original series, he often relies on his friends and the guidance of Dumbledore. But in a fanfiction about risky business, he might have to make decisions on his own more quickly. He could be more willing to take risks without thinking about the consequences as much, which would change his character development from the more cautious Harry we see in the original story at times.
The relationships between characters could also be developed differently. In the original series, Snape and Harry have a very tense relationship. In the fanfiction, the risky situation they are in could force them to trust each other more quickly. This would lead to a faster development of a positive relationship between them. Maybe Snape would start to see Harry as more of an equal in the face of danger rather than just a student he has to protect in a begrudging way.
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.
Often, fanfic authors give Cho a more complex backstory. Maybe she has family secrets related to the wizarding world's history. This can lead to her making different choices. For instance, she could be more involved in the Order of Phoenix's activities earlier on, rather than just being on the sidelines as in the original. This new backstory can also affect her relationships with other characters, like her friendship with Hermione or her rivalry with Ginny in a more nuanced way.
Well, in fanfiction, Severus' character can be developed to show his softer side towards Lily earlier on. In the books, we mainly see his tough exterior and his actions as a double agent. But in fanfiction, we might see him expressing his love for Lily in more open and desperate ways. As for Lily, she could be developed in a way that she is more empathetic towards Severus' situation. In the books, she seemed to cut him off quite harshly, but in fanfiction, she might try to understand his reasons for getting involved with the Death Eaters and still hold some hope for their relationship.
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.
One possible plot could be Snape getting involved in a risky mission within the wizarding world that somehow involves Harry Potter. Maybe it's a mission to retrieve a powerful and dangerous magical artifact that Voldemort is also after. And Harry, against Snape's initial wishes, tags along and they have to learn to work together, facing numerous magical creatures and dark spells along the way.
In the original series, Naruto is mainly focused on becoming Hokage and getting Sasuke back. In the fanfiction, as Anbu Naruto, he might be more secretive and have a darker side. He could be more cynical about the village's politics. Female Sasuke, on the other hand, may be more independent than in the original. She could be more involved in political matters in the village rather than just seeking revenge. For example, she might use her skills to try and reform the ninja system.
Uhura's character could be developed to be more assertive in her relationship with Spock. In fanfiction, she might take the lead in certain situations, like when it comes to making decisions about their future together. This is different from the original series where she was more in a supporting role in their relationship.
They can interact through virtual avatars. For example, Harry could have an avatar that has special abilities in the virtual world like flying faster than his normal self. Hermione might be able to access virtual libraries with more ancient and forbidden knowledge.