There's a fanfiction called 'RWBY and Naruto: A Crossover of Power'. In this, the characters from RWBY and Naruto come together to face a common threat. For example, Ruby's scythe skills combined with Naruto's combat experience make for some exciting fight scenes. Also, the story might explore how the different power systems, like semblances and chakra, interact with each other.
One possible scenario is that Naruto uses his Sage Mode to sense Salem's true nature and the source of her power. Then he can target that source and use his unique techniques to neutralize it. Another could be that he forms an unexpected bond with Salem, similar to the bonds he formed with his enemies in his own story. Through this bond, he gradually changes her perspective and saves her from her path of destruction.
Perhaps Salem discovers a way to use Naruto's chakra for her own evil purposes. So, Naruto has to find a way to stop her while also dealing with the new and unfamiliar world of RWBY. He might learn some new skills from the RWBY characters along the way.
In some RWBY fanfictions, Naruto might save Salem by using his powerful jutsu. For example, his Shadow Clone Jutsu could be used to create distractions while he finds a way to break Salem's dark magic. His Rasengan might also be able to counteract some of the negative energy she emits.
One interesting Naruto Salem fanfiction could be about Naruto being transported to Salem's world and having to deal with its unique magic and politics. He might use his ninja skills in unexpected ways there.
Some fanfictions revolve around Salem's relationship with magic. They might explore how she became so proficient in dark magic and what the limits of her powers are. Also, the idea of Salem facing a moral dilemma, perhaps a moment where she has to choose between two different paths that could change the course of her actions in Remnant, is a theme in some fan works.
Fanfiction writers blend the universes by creating new storylines. They might have Naruto end up in RWBY's world due to some magical accident. Once there, he has to deal with Salem's threat. The RWBY characters are initially skeptical of Naruto but soon come to respect his abilities. The different cultures of the universes are also merged. The shinobi way of life from Naruto can be seen rubbing off on the RWBY characters, and the technology and magic of RWBY can be something new and exciting for Naruto. Salem, as a powerful antagonist, adds an extra layer of danger and mystery to the blend of these universes.
One great 'rwby salem x oc fanfiction' is 'The Dark Alliance' which explores an interesting relationship between Salem and an original character. It delves into how the OC, with their unique abilities, interacts with Salem's plans and power. Another one could be 'Salem's New Ally' which focuses on the growth of the OC as they side with Salem and face the challenges that come with it.
A good RWBY Salem fanfic often has a deep exploration of her character. It should show more than just the 'evil villain' side. For example, it could explore her past traumas or her reasons for her actions. This makes her more three - dimensional.
Fanfiction about Ozma and Salem in RWBY can be quite creative. Some might focus on their love story that turned so sour. It could be about how their initial love was pure but got corrupted over time due to various factors like the power they both held or the interference of others. Others may explore their powers in unique ways. For instance, how Ozma's reincarnation magic could be used differently or how Salem's control over Grimm could be more nuanced. There are countless possibilities for writers to play with in the context of these two characters in RWBY fanfiction.
Yes, in some RWBY fanfictions, Salem can be portrayed as a mother figure. Some authors might explore this aspect to add depth to her character or create unique storylines within the RWBY universe.