When it comes to power levels, Sans also has his intangible nature which can be a huge advantage in the RWBY fanfic world. He can't be physically hit as easily as normal characters. This, combined with his combat experience from his original universe, can make him a force to be reckoned with. Some fanfics also explore the idea of Sans learning new powers in the RWBY world, like using Aura in a way that no one else has thought of, which could potentially make him even more powerful.
He could also be a part of a backstory for another character. For example, he might have been involved in some past experiments that affected a character's development. This would add depth to the overall plot and the related character's story arc. He could have been the one who provided certain technology to a villain, which led to a series of events that the RWBY team now has to deal with.
It fits in an interesting way. Shirou's Excalibur can be seen as an out - of - place yet powerful element. It might disrupt the normal flow of RWBY's world, but also offer new possibilities for combat and storylines. For example, it could be the key to defeating a new, extremely powerful type of Grimm that the regular RWBY weapons can't handle.
Sasuke would be a very powerful addition to the RWBY world's power structure. His Sharingan gives him enhanced perception, which would be extremely useful against the Grimm. He could easily analyze their attack patterns and weaknesses. Also, his ninjutsu skills like the Chidori and Fire Style: Great Fireball Jutsu are very powerful. In terms of the Huntsmen and Huntresses ranking, he would probably be considered an S - class level threat or fighter due to his abilities.
CC could potentially be quite powerful. If we consider her abilities from her original context, she might be on a similar level to some of the stronger jonin in the Naruto world. For example, her ability to analyze and adapt quickly could give her an edge in combat.
In fanfictions, it might be that the Iron Dragon Slayer power is related to the elemental chakra system. Maybe it's a way to manipulate iron - based substances in a way similar to how ninja manipulate the elements. So it could be like an advanced form of earth - style jutsu, but with a unique dragon - slayer twist.
Gwendy can fit in as a new friend to the main characters. She could join Harry, Ron and Hermione on their adventures and offer a fresh perspective. Maybe she has a different approach to solving problems, like using her knowledge of Muggle technology in a magical way.
He fits by being an overpowered character that disrupts the normal power balance. This can make for interesting stories as the RWBY characters have to adapt.
Ruby would likely be very excited to explore Earth. She might see it as a new adventure and would be eager to make new friends. Her weapon skills could also make her stand out in self - defense classes or martial arts clubs.
There was no clear answer to the division of combat power levels in the Crescent world. The complicated worldview of the crescent moon made it difficult to compare their combat strength. There were some discussions about combat power levels, such as floor theory and combat power classification, but there was no specific ranking or level division. Therefore, based on the information provided, it was impossible to give an accurate answer about the combat level of the Crescent world.
He might fit in by becoming a teacher or some sort of mentor at the school. Since he has such great power, he could teach the students new ways of using their own powers or just general combat skills. In the process, he'd get involved in all the drama and power struggles within the school, adding a new dynamic to the story. He could also have his own goals and motives that are slowly revealed as the fanfiction progresses.