Kristoff could be a focus too. His life as an ice harvester and his relationship with Sven can add a unique flavor to a fanfiction. Maybe he discovers a hidden ice cave filled with ancient secrets while out on a normal ice - harvesting trip, and he has to decide whether to keep it a secret or share it with the people of Arendelle.
Definitely the Northuldra people in general are underrated as a whole for fanfiction. They have a rich culture that we only got a glimpse of in the movie. Focusing on one of the unnamed Northuldra characters, perhaps a young girl who was there when Elsa first arrived in the forest. She could have her own perspective on the events and her own story of how she saw Elsa as a potential savior or a threat. Also, the guards from Arendelle who were with Mattias could be the focus. Their adjustment to living in the forest for so long and their loyalty to Mattias could be explored in a fanfiction.
The main family members can be great to focus on. Their relationships, power struggles, and dreams offer a lot of material. For example, the patriarch of the family who has to make tough decisions to keep the ranch going. Another good character could be the strong - willed matriarch who holds the family together. Also, the young and rebellious heir who wants to do things his own way.
All of the members of 4 town are great to focus on in different ways. Tae Young, for example, might be the subject of a fanfiction where his amazing dancing skills are the center of the story. Maybe he gets an offer to be in a big dance competition outside of the band, and he has to decide whether to take it or stay loyal to 4 town. Each member brings their own unique traits that can be explored in fanfiction.
Sersi is a great character to focus on. She has a strong connection to humanity and her powers are quite interesting. You could explore her relationships with humans in more detail. Another good one is Ikaris. His loyalty and the internal conflict he might face are good material for a fanfiction. Then there's Kingo, with his love for movies and his unique charm among the Eternals.
Verne also offers a lot for fanfiction. His cautious and rule - following personality can contrast with RJ's more adventurous side. Stories can be built around how Verne tries to keep RJ in line or how he slowly becomes more daring because of RJ's influence.
I think Otto is a prime character for Time Squad fanfiction. He's young and still learning, so there's a lot of room for character development. You can write about his challenges and how he overcomes them. Buck is another excellent option. His no - nonsense attitude and his knowledge of different time periods can be the basis for many exciting adventures. Sally, too, with her intelligence and ability to handle difficult situations, can be a central character in a great fanfiction.
Definitely Naruto and Star Butterfly. Naruto is a powerful and determined ninja, and Star is a magical princess. Their different powers and personalities would create a lot of interesting interactions. For example, Naruto's never - give - up attitude could inspire Star when she faces a tough situation in her own world.
Sakura is an obvious choice. She is the main character, and there are so many aspects of her character that can be explored further in fanfiction. You can write about her growth as a Cardcaptor, her feelings towards her friends and family, and her evolving magical abilities. Another great character is Syaoran. His backstory as a descendant of Clow Reed and his journey from being a rival to Sakura to a close friend and potential love interest offers a lot of material. Tomoyo is also a great character to focus on. Her unwavering support for Sakura and her love for designing costumes can add a unique touch to a fanfiction.
The villains can also be great focuses. In fanfiction, they can be given more backstory, motives, or even a redemption arc that makes them more complex and interesting. For instance, a villain might have a tragic past that led them to their evil ways.
Definitely Atreyu. His backstory, like his training and family, can be delved into deeply. You can also explore his emotions during his quest, like his fear and his hope. Then there's Gmork. Writing about his motives and his past could be fascinating. Maybe he wasn't always evil. And the Empress? She has so much power and mystery. Fanfiction about her early days on the throne or her relationship with the different beings of Fantasia would be very engaging.