Mr. Incredible is often a central focus. His strength and his journey from being a solo hero to part of a family - centric superhero unit can be explored in many ways. Writers might delve into his past more, like his early days of training and how that has shaped him.
Syndrome is a character that might be explored. His backstory, his motives, and how he could potentially be redeemed or further explored in an alternate universe type of fanfiction. His complex relationship with the Incredibles can be a rich source of story material.
Rick Grimes is often a popular focus. Writers might explore his leadership in different scenarios, like how he would handle a situation where the group is divided by a moral dilemma. For example, if some in the group want to use more violent means to get resources and others oppose it.
Naruto himself is often a central focus. Since he is from the Uzumaki lineage, fanfictions might explore more about his family's past and how that affects his powers. Another popular one is Sasuke from the Uchiha lineage. Writers like to expand on his journey with his clan's heritage.
In 'naruto multi fanfiction', characters like Gaara are often explored. His transformation from a lonely and feared outcast to a respected leader is a great story to build on. Fanfictions might show him forming even closer bonds with the other Kage or developing new sand - based jutsu. Hinata is also a beloved character in fanfiction. Writers might focus on her relationship with Naruto in different scenarios, or her growth as a kunoichi outside of her love for Naruto.
Obviously, Harry Potter himself is often a central character. His journey from the Boy Who Lived to a graduating student is full of potential for exploration. Hermione Granger is also popular as she's always been at the top of her class, and her post - graduation academic and career choices are interesting to write about. Ron Weasley, with his growth from a sometimes - bumbling sidekick to a confident young wizard, is another character that gets a lot of focus.
Hermione Granger is often a popular focus. Fanfiction writers might explore her life outside of her adventures with Harry and Ron, like her family life or her further studies in magic. Another is Draco Malfoy. Writers can give him a redemption arc, showing his inner struggles and how he might change for the better after the events of the original series.
Harry Potter himself is often still a central figure. People like to write about his life after the main events of the series, like his career as an Auror. Hermione Granger is also popular. Fanfictions might show her furthering her magical research. Ron Weasley is another one, with stories perhaps about his life with Hermione and their family. Draco Malfoy is often focused on too, exploring his redemption arc further or his new role in the post - war wizarding world.
Naruto himself is often a central focus. His growth as a ninja and his journey to become Hokage are popular themes to expand on in fanfic. Writers can explore different paths his life could have taken.
Obviously, The Flash himself is a central character. Then there's Iris West, his love interest. Cisco Ramon, with his technological expertise, often plays an important role too. Also, Caitlin Snow, who can transform into Killer Frost, is a popular character in these fanfictions.
Genos is also a favorite. Fanfiction authors might develop his relationship with Saitama further. For example, they could write about how Genos becomes even more determined to be like Saitama, or how he protects Saitama from threats that Saitama might not even consider serious. His backstory as a cyborg and his quest for revenge are also rich areas for exploration.
I'm not aware of specific popular 'Incredibles' adult fanfiction stories as I don't promote or focus on adult - themed content. However, there are likely many non - adult fanfiction stories about 'The Incredibles' that focus on things like the family's further adventures, new superpowers they might develop, or interactions with other characters in the superhero world.