Another possible main character could be a mentor figure. This could be someone like Derek Hale, who has experience with the supernatural world. He might offer guidance to Scott on how to protect his sister and help her develop any latent powers she might have. So, all these characters interact and form the core of the fanfiction story.
In many of these fanfictions, Scott's mother might also be a main character. She has to deal with the challenges of having a daughter in a world full of supernatural threats. And then there could be antagonists like the hunters or other supernatural creatures that pose a threat to the baby sister, so they also play significant roles in the story.
Obviously, Scott McCall is one of the main characters. His baby sister is also a central figure. Depending on the fanfiction, characters like Stiles, who is Scott's best friend, could also be important. They might help Scott protect his sister or be involved in her upbringing in some way.
There could be a story where the baby sister is the key to solving a big mystery in the supernatural world. She has a unique connection to an ancient artifact or a prophecy. Scott and his friends initially don't realize her importance, but as the story unfolds, they discover that she holds the answers they've been looking for. This leads to a lot of character development for her and strengthens the bond between her and Scott as they work together.
The people who in the future are his enemies but in the past are just normal people might become his allies. For instance, if there is a character who later turns against him, in the past he might be able to befriend that person and change their future path, so they end up helping him in his time - traveling adventures.
Female characters in Scott McCall fanfiction usually have unique personalities. Some are sassy and confident, like the character in 'The Sassy Female in Scott's World'. They can bring a different dynamic to the group. They are also often depicted as having deep emotional connections. Whether it's a romantic connection with Scott or a strong friendship, their emotions are a big part of the story. Moreover, they can be independent, making their own decisions and not relying solely on Scott or other male characters.
It could be a powerful and ancient werewolf who is against the idea of Scott and Kali teaming up. This antagonist might see their union as a threat to his own power and plans in Beacon Hills.
There could also be other animatronics from the sister location as main characters. They might interact with the baby in different ways, such as being friends, foes, or something in between. For instance, there could be a big, intimidating animatronic that at first seems like a threat to the baby but later turns out to be an ally.
There's also 'Scott's Struggle'. This fanfic focuses on how Scott deals with an injury that not only affects his physical abilities but also his role as a leader. It shows his journey of self - doubt and how he overcomes it. It's a really engaging read.
One great Scott McCall's little sister fanfiction could be where she discovers her own supernatural powers and has to navigate the same world as Scott, but with her own unique challenges. Maybe she has a different type of werewolf ability or some other hidden power.
She might be very intelligent. Maybe she's the one who figures out the weaknesses of the various supernatural creatures they encounter. She spends her time in the library researching and comes up with strategies to keep everyone safe.
One great Scott McCall fanfiction is 'The Alpha's Redemption'. It delves deep into Scott's struggle with his werewolf nature and his leadership role. Another interesting one could be 'Scott's Hidden Powers', which explores new abilities that Scott might possess but haven't been shown in the original series.
Yes, there are quite a few. You can start by looking on fanfiction.net. There are many different takes on their relationship, some focus on adventures they might have together in a crossover universe, others might explore their emotional connection in a more angsty way.