Another common main character type is the damsel in distress. Like Guinevere. She was King Arthur's queen. Her character often added a romantic and sometimes conflict - inducing element to the story as she was the object of many knights' affections.
One popular main character is Beowulf. He is a hero from the Anglo - Saxon epic. Beowulf is known for his great strength and courage. He battles fearsome monsters like Grendel and his mother, and later a dragon. His character embodies the values of the time, such as heroism and loyalty.
Obviously Naruto would be one of the main characters. Since it's set in an academy, his classmates like Sasuke and Sakura would likely also be important characters. The academy teachers, such as Iruka - sensei, would probably play significant roles as well.
Anna is another important character. She plays a role in guiding and supporting the other characters. Her knowledge and skills contribute to the group's overall efforts in the fight against the D2, and her interactions with Takt and Cosette add depth to the story.
Typically, they are often very powerful from the get - go. For example, in 'Overlord', the main character has a vast array of powerful spells and an army at his disposal right after being transported to the new world. This immediate power gives them an edge in the new and often dangerous isekai settings.
OP main characters can also attract a large fan base. Fans love to see these powerful characters dominate in battles. In 'Sword Art Online', Kirito's OP skills make him a very popular character, and his actions are central to the story's development, especially when he takes on the toughest bosses.
One of the most OP characters is Superman from DC Comics. He has super strength, can fly, has heat vision, and is nearly invulnerable. His powers make him extremely difficult to defeat in most situations.
One great OP MC (Overpowered Main Character) fantasy light novel is 'Sword Art Online'. The main character, Kirito, is extremely skilled and powerful in the virtual world of Aincrad. Another is 'Overlord'. Momonga, the main character, is a very powerful magic caster in a game world that has become a reality. Also, 'That Time I Got Reincarnated as a Slime' is good. Rimuru starts as a slime but quickly gains incredible powers and builds his own nation.
Well, they are often highly intelligent. For example, in 'No Game No Life', Sora and Shiro can analyze complex game situations and come up with strategies that others can't even fathom. Another characteristic is adaptability. In 'Overlord', Momonga has to adapt to a world that is suddenly real and deal with all the new challenges while using his op powers.