The main characters are always a great choice. Their pre - established relationships and storylines provide a solid foundation to build on. You can expand on their love story, or their struggles against the political backdrop of the story.
Secondary characters with interesting personalities can also be a good focus. For instance, a character who is a bit of an outcast but has some unique abilities. Developing their story can add new layers to the 'Of Fire and Stars' universe.
Villainous characters can be really engaging to write about in a fanfic. You can explore their motives more deeply, perhaps give them a redemption arc or make them even more menacing. By delving into their psyche, you can create a more complex and interesting fanfic within the 'Of Fire and Stars' world.
Katniss is always a great choice. Her complex emotions, from her love for Peeta and Gale to her hatred for the Capitol, offer a lot of material. You can explore her inner thoughts during the Quarter Quell, like how she copes with the added pressure. Peeta is also good. His kind nature and his love for Katniss can be delved into deeper, especially when he's trying to protect her in the arena.
Philip and Elizabeth Jennings are obvious choices. Their complex relationship and double lives are full of potential for fanfic exploration. You can create scenarios that further test their loyalty to each other and to their country.
Jack is a great character to focus on. He's the main character, so there's a lot of material to work with. His growth in martial arts and his relationships with the other characters are rich areas to explore. For example, you could write about his struggle to master a new move and how his friends help him.
I think focusing on the Wattersons family as a whole can be really interesting in a Gumball fanfic. You can show their family dynamics, like how Richard's laziness affects the household, or how Nicole's strictness is both a help and a hindrance. Then there are the friends like Carrie, the ghost girl. Her spooky nature and her friendship with Gumball and the others can add a unique element to the story. And Tobias, with his one - sided crush on Penny, can also bring in some elements of unrequited love and jealousy into the fanfic.
Austin and Ally are the main characters, so they should be at the center. However, Dez can't be ignored. His wacky ideas for Austin's music videos and his general goofiness can create some hilarious scenarios in a fanfic. You could also explore more of the relationship between Dez and Trish, which is often overlooked in the show.
Jack Frost is a very popular choice. His mysterious past and his cool powers make him an interesting character to explore. You can dig into his feelings of isolation before becoming a Guardian and how he's changed since then.
Fat Amy is a great character to focus on. Her larger - than - life personality and unique sense of humor can bring a lot of fun to a fanfic. You could write about her secret talents or her family back in Australia.
Nanisca is an obvious choice. She is the central figure in the movie, so there is a lot of material to work with. You could explore her leadership further, her past traumas, and how she continues to grow as a leader.
Definitely the main character's closest friends or allies. Their relationships can add depth and emotion to the fanfic. Also, antagonists are important. A well - developed villain can create conflict and tension. You can explore their motives and make them more than just a one - dimensional 'bad guy'. And don't forget about those characters who seem minor at first but have hidden potential or secrets.
Star - Lord is an obvious choice. His dual identity as a human from Earth and a galactic hero gives a lot of scope for character exploration. You could write about his struggle to balance his two lives, or how his memories of Earth influence his decisions in the galaxy. Drax is also interesting. His quest for revenge and his unique way of seeing the world can be the center of an engaging fanfic.