In some 'dark lord stories', there can be a love interest as well. This character might be the motivation for the hero to fight the dark lord. For instance, the dark lord may have kidnapped the hero's beloved, and that spurs the hero into action. There could also be a mentor figure who has trained the hero to face the dark lord, teaching them skills and magic.
Apart from the dark lord, there are often heroes in 'dark lord stories'. These heroes are brave and determined to stop the dark lord's evil plans. Sometimes there are also side characters like the dark lord's minions or wise old sages who give advice to the heroes.
Obviously, Harry Potter himself is a main character, but in these stories where he's a dark lord, his friends like Hermione and Ron also play important roles. They could be either trying to stop him or reluctantly following him. Voldemort might also be a key figure, perhaps as a mentor or a rival to the new dark lord Harry.
In a 'the dark lord novel', the main characters could be the dark lord, who is the source of the conflict. There might be a young and inexperienced protagonist who discovers the threat of the dark lord and decides to fight against him. There could also be side characters like the dark lord's minions, who add to the complexity of the story. For instance, the minions could have their own motives and loyalties that are not always straightforward. And perhaps there is an old and wise mentor figure who guides the hero in the fight against the dark lord.
Obviously, Naruto would be one of the main characters, just in his new 'dark lord' role. Sasuke could also be a major character, as his relationship with Naruto is so central in the original series. Their dynamic would likely be very different in this fanfiction, perhaps becoming more of an adversarial relationship.
In the 'rise of the dark lord novel', the main character is likely to be the dark lord. However, there may also be characters like his minions or followers who play important roles in his rise. On the other side, there could be a wizard or a knight who tries to stop him, and they would also be main characters in the sense that they drive the plot in opposition to the dark lord.
The main characters would probably include the titular Dark Lord, who is likely a powerful and complex figure. Then there's the character whose goal is to tame him. This character could be a young and inexperienced person who grows throughout the story. There may also be antagonists who oppose the idea of taming the Dark Lord, either because they fear his power or have their own evil plans. Additionally, there could be characters from the Dark Lord's past, like former allies or enemies, that play a role in the taming process as their relationships and past events are uncovered.
Well, without knowing the exact 'Dark Lord Light Novel', we can only make general assumptions. The main character would be the dark lord, who might have a complex personality. There could be a female lead who is either an enemy trying to bring down the dark lord or a love interest that adds a different dimension to the story. And then there might be an old sage - like character who has knowledge about the dark lord's past and tries to guide the other characters in their fight against or alongside the dark lord.
Obviously, the Dark Magician is one of the main characters. It's the central figure in these duel stories.
An adventurer might be a main character. They are used to facing challenges and the dark room is just another mystery for them to solve. They might bring their tools and knowledge to deal with whatever is in the room.
In Dark Duelist Stories, it's possible that one of the main characters is a duelist who has a special connection to his cards. He might be able to draw out more power from them compared to others. Another could be a duelist who was once defeated but comes back stronger and more determined than ever to make a name for himself in the dueling community.
There might also be an antagonist who represents the 'dark' side more directly. This character could be trying to corrupt the protagonist or disrupt the balance in the story's world. They could have their own motives, which may be related to power, revenge, or some other dark desires.