Rudy is also a good choice. He's the sensei, and his relationship with the students is both comical and meaningful. A fanfic could center around Rudy's past as a martial artist and how he imparts his wisdom (or sometimes lack of it) to the kids. Plus, his eccentricities make for interesting storytelling.
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.
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.
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.
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.
Definitely Anastasia. Her transformation from a girl with a hazy memory to a confident young woman is a rich area to explore. Vlad is also an interesting character. His flamboyant personality and his relationship with Dmitry can add humor and depth to the fanfic. And Gleb, the Soviet officer, can be a great character to focus on if you want to add some conflict. His duty to the Soviet regime versus his growing feelings for Anastasia can create a lot of tension in the story.
Sinestro can be an interesting character to focus on in an 'emerald twilight fanfic'. His relationship with the Green Lanterns, especially Hal Jordan, was complex. You could write about his role during the Emerald Twilight, whether he was secretly manipulating events or if he had his own agenda that was related to the chaos. Also, Guy Gardner has a fiery personality. Focusing on him could add a lot of action and conflict to the fanfic as he reacts to the events of Emerald Twilight.
Zero Two is a great character to focus on. Her complex backstory, her unique personality, and her relationship with Hiro offer a lot of material for a fanfic. You could explore her past more deeply, like her experiences as a half - klaxosaur, half - human and how that has shaped her into the character we see in the series.
Definitely Rick and Morty first. Rick with his brilliant but damaged mind and Morty with his naivete and growth potential. However, Jerry is also a good character to focus on. His insecurities and his often - comical attempts to assert himself in the family can be mined for great fanfic stories. Beth is another one. Her relationship with her father Rick and how she tries to balance her own life and family while having Rick's influence can make for some engaging fanfic.
Lucy is a top choice for a Lockwood and Co fanfic. Her journey from a novice to a more experienced agent is full of potential for character development. You could write about her struggles with her powers, her relationships with the other characters, and her own personal goals. Another great character is Skull. Even though it's a ghost, it has a unique relationship with Lucy and there's so much you can do with that. You could explore how Skull came to be in the state it is and what it really wants from Lucy.