Princess Celestia and Princess Luna are likely to be in the fanfic. They are the rulers of Equestria and have knowledge about alicorns. They could either guide Rarity or test her to see if she's truly worthy of becoming an alicorn. Other ponies from Canterlot or Ponyville might also be included, like the fashion ponies in Ponyville who might be jealous or inspired by Rarity's potential ascension.
Obviously, Rarity herself is the central character. Her friends from the Mane Six, like Twilight Sparkle, who could help her understand the magic involved in becoming an alicorn. Also, Spike might be there, as he's always around Twilight and could play a role in Rarity's journey, perhaps by providing some useful information he's found in his library duties.
Well, it could be about Rarity's journey to becoming an alicorn. Maybe she discovers a hidden magic within herself and has to go through a series of trials to transform. For example, she might have to prove her selflessness by using her fashion skills to help those in need in Equestria.
Her friends like Pinkie Pie, Rainbow Dash, Applejack, Rarity and Fluttershy are likely to be main characters. Pinkie Pie might bring her usual cheer and parties to celebrate Twilight's new form. Rainbow Dash could be both impressed and a bit competitive, trying to keep up with Twilight's new abilities in her own way. Applejack would offer her down - to - earth advice and support. Rarity might be excited to create new outfits for Twilight as an alicorn. And Fluttershy would be there with her gentle nature, providing a calming presence.
Obviously Percy himself. Also, Annabeth would probably be there as his girlfriend. Grover, his satyr friend, might also make an appearance. And the gods, like Poseidon, Percy's father, would surely play a role, either guiding Percy or testing him on his path to godhood.
One interesting plot could be Twilight's struggle to adapt to her new alicorn form. She might face challenges in controlling her enhanced powers at first. For example, she could accidentally cause magical outbursts while trying to perform simple spells. Another plot could involve how her relationships with her friends change. Some friends might be in awe of her new status, while others could be a bit intimidated initially.
The main character is Kobayashi. There could be a magical creature or wizard who accidentally caused her transformation. There may also be a group of adventurers who cross paths with her. Some of them might be curious and want to help, while others might be scared and try to avoid her. And of course, there could be a love interest, perhaps another dragon or a human who is attracted to her new and unique self.
Obviously, Chell is the main character. There could also be other characters from the original story that interact with Chell during her transformation into a core. Maybe some mentor - like figures who guide her through the process, or antagonists who try to stop her from achieving this new status.
Ben himself would definitely be the main character as it's about him being sick. His Grandpa Max is likely to be there, as he is always looking out for Ben. Gwen, his cousin, would also probably be in it, trying to use her magic to help Ben get better or at least understand what's wrong with him.
Well, Naruto is a given. Then there could be other minor gods or spirits in Kami's realm that Naruto meets. Maybe there's a guardian spirit of the ninja world that only appears when someone tries to reach Kami. Also, characters like Kakashi could be involved. He might have some knowledge about Kami that he imparts to Naruto before the journey, or he could even end up joining Naruto on his adventure to Kami.
Obviously, Percy and Annabeth are the main characters. But we could also see some of their demigod friends like Grover. Grover might stop by to check on them and end up getting involved in the babysitting chaos. Maybe Chiron could also make an appearance, giving Percy and Annabeth some advice on how to handle the kids.
The death of Rarity would deeply sadden Twilight. They are good friends and Twilight would feel like she has lost a part of her support system. She might become more withdrawn as she tries to come to terms with the loss.