Kakashi could also be included. He has a history with Obito, and his relationship with Itachi was also complex. His skills and his role as a mentor - like figure can bring a different dynamic to the story. For example, he could be the one who suspects something strange is going on between Itachi and Obito and tries to figure out their motives.
Minato might also be a prominent character. As their teacher, he can influence the way Obito and Kakashi interact. In some fan fictions, he could be the one to help them resolve their differences or provide some crucial information about their past that changes their current situation.
One idea could be a story where Itachi and Obito are forced to team up against a new, powerful enemy that threatens the ninja world. They start off distrusting each other due to their past actions, but as they face challenges together, they gradually come to understand and respect one another.
Some fanfictions might explore the emotional aspect of their fight. For example, how their past friendship affects the battle. Maybe Kakashi hesitates to strike a fatal blow because of their shared history.
Well, Obito started off as a normal, if a bit of a troublemaker, young Uchiha in Konoha. He had dreams and friends like Kakashi and Rin. But that fateful mission changed everything. He witnessed Rin's death, which shattered his world. Madara took advantage of his broken state. Obito became a key figure in Akatsuki, plotting and causing chaos in the ninja world. Eventually, after many battles and revelations, he realized his mistakes and tried to make amends in his own way.
In some fan fictions, there might be a plot where Obito has a change of heart before a major battle with Kakashi. He could start to question his motives and the path he has chosen, leading to a very intense and emotional confrontation with Kakashi that is more about ideology than pure combat.
In a straight - up fight, Itachi has some very powerful abilities. His genjutsu can be extremely difficult to break out of, and his ninjutsu attacks are strong. But Batman is no slouch. He has fought against some of the most powerful villains in the DC universe. He would study Itachi's moves and try to find a pattern. Batman might also use his wealth to create some sort of countermeasure to Itachi's Sharingan. Overall, it's a very close call and would likely depend on how the writer of the fanfiction wants the story to go.
McGregor's unruly behavior and his disrespect towards Khabib. He said things that were completely unacceptable. Khabib, being a proud fighter with strong values, couldn't let those remarks slide. So, he took on McGregor in the fight to set things straight and prove his worth in the MMA world.
One of the crucial events was when he was presumed dead. This led to a series of events that changed his life. Then, Rin's death made him vulnerable to Madara's manipulation. His time as Tobi in Akatsuki was filled with various evil deeds like helping to capture the tailed beasts. But later, his interaction with Naruto and the realization of his own wrongdoings were important events that led to his redemption.
You could also check out Naruto fanfiction groups on social media platforms like Facebook. There are often enthusiasts who share and discuss their favorite fanfictions. Just search for relevant groups, join them, and then look for fanfictions about Kakashi vs Obito.