Well, obviously the young wolf is a central character. There might also be an older, wiser wolf who acts as a mentor, guiding the young wolf through various situations.
Sometimes, there are human characters as well. They might interact with the young wolf in different ways, like being protectors or threats. This can add an extra layer of complexity to the fanfiction as the young wolf has to deal with a different species.
Often, there are other young wolves in the pack. They could be friends or rivals of the main young wolf. Their different personalities and abilities can create interesting dynamics within the story.
Villains can also be main characters in a sense. For instance, the Light, an organization of villains in the Young Justice universe. Their actions and plots against Robin Wolf and the team drive the story forward. They create the challenges that Robin Wolf has to overcome, and their interactions with him can reveal different aspects of his character.
One common theme is the struggle of identity. The wolf characters often have to figure out where they fit in, whether it's among humans or within the Young Justice team. For example, they might have to hide their wolf - like instincts in a human - dominated world.
Zelda is often paired with Young Link in crossover fanfiction. Their relationship from the original Zelda games can be further explored or reimagined in a crossover scenario. For example, they might face new challenges together in a world that combines elements of different Nintendo games.
One common theme is self - discovery. Since the She - Wolf is often a unique and complex character, many fanfictions explore how she discovers more about herself, her powers, and her place in the world. For example, she might find out new things about her origin that change her perspective.
Robin is often paired with Starfire in Young Justice fanfiction. Their relationship can be explored in different ways, from a budding romance to a strong friendship based on mutual respect for their skills. Another common pairing is with Superboy. Their different powers and personalities can create interesting dynamics, like Superboy's brooding nature contrasting with Starfire's more upbeat and positive attitude.
Well, obviously Kara herself is a common character. Then there's often her adoptive family, like the Danvers. Alex Danvers, her sister, is frequently in these fanfictions. They usually have a strong bond that's explored further. Also, Clark Kent might make an appearance. Since he's also from Krypton, he can act as a mentor or a source of information for Kara about their home planet.
In some fanfictions, there may be a fairy or a witch. The fairy could be the one who cursed the wolf in the first place (if he is a cursed prince). The witch might be an antagonist who tries to use the relationship between Little Red Riding Hood and the wolf for her own evil purposes. Or she could be a helpful figure who provides the key to solving the problems they face in their relationship, like a spell to make the villagers accept their love.
Kakashi could be another popular character. He might be the one to discover Naruto's connection to the wolves and help him understand and control it. His wisdom and experience as a ninja would be valuable in such a situation. Also, characters like Shikamaru could be involved, using his intelligence to strategize around Naruto's new wolf - related abilities.
In this fanfiction, there could be new characters introduced as well. There might be an older, wiser wolf that takes Harry under his wing, so to speak, and teaches him about the ways of the wolf. Or perhaps there's a villain who is specifically after wolf - Harry for some dark purpose.
Ruby Rose is often a popular character in RWBY Wolf fanfiction. Her speed and combat skills can be incorporated into stories involving wolves in creative ways, like racing against a wolf - Grimm or using her scythe to fend off a pack of wolf - like enemies.