Well, obviously Naruto and Caesar are the main characters. Naruto is the energetic and determined ninja from the Hidden Leaf Village, known for his powerful jutsu and never - give - up attitude. Caesar, on the other hand, brings his own set of skills and characteristics, which could vary depending on how the author portrays him in the fanfiction.
The main characters are clearly Joseph and Caesar.
One interesting Naruto Caesar fanfiction could be about Caesar teaching Naruto some unique combat techniques. Maybe Caesar's strategic mind combines with Naruto's determination and chakra powers to create an amazing adventure.
There might be other characters like his political rivals. For example, Pompey could be an important character as he was in conflict with Caesar in the Roman political arena. Their power struggle and interactions would be significant parts of the story in the graphic novel.
The theme of friendship - turned - rivalry is very prominent. They start off with a certain bond, but as the story progresses, their different goals and personalities drive them apart into rivals. Fanfictions often play with this transformation, showing how their relationship deteriorates over time.
Sasuke is often a main character in such fanfictions. He could be Naruto's right - hand man, using his skills and intelligence to support Naruto's rule. Their relationship might be more complex, with Sasuke having to come to terms with Naruto's new position of power.
There could also be some original characters created specifically for this fanfiction. For example, a powerful ninja who has knowledge about the merge process and tries to either help or hinder Naruto. Or perhaps an ancient spirit that was somehow involved in the creation of Dark Naruto in the first place and now has an interest in the merge.
The main characters are often Naruto, as he is the focus of the mecha concept. Shikamaru could also be a main character in this type of fanfiction. He would be the strategist, trying to figure out how to best utilize the mecha Naruto in battles. Additionally, Orochimaru might be a character in some cases. He could be interested in stealing the technology of the mecha for his own evil purposes or trying to manipulate Naruto through it.
Julius Caesar would be the main character for sure. And probably Brutus, since he played a crucial role in Caesar's assassination.
Often, in Naruto Blackfire fanfiction, Sakura can also be an important character. She might be jealous of the new relationship between Naruto and Blackfire, or she could work together with them. Sasuke may also make an appearance, especially if the story involves some sort of threat to the ninja world that requires his power. So, while Naruto and Blackfire are central, other characters from the Naruto universe play significant roles as well.
Obviously, Naruto is one of the main characters. He brings his own set of skills, values, and personality to the ANBU setting. Another main character could be Kakashi. Since he has experience in ANBU and also has a connection with Naruto, he could play an important role in guiding Naruto or being involved in the same missions.