There could also be characters like Dumbledore, even if in spirit or through memories. His wisdom might have influenced Harry's understanding of life debts, and his past actions could be related to debts that Harry is now calling in. And then there are the characters who owe Harry their lives. This could include Neville, who Harry has saved on multiple occasions, and their relationship could be further explored in the context of the life debt.
Obviously, Harry Potter would be one of the main characters. He is the one calling in the life debts. There might also be the people who owe him life debts, like some of his friends who he has saved in the past, or even some unexpected characters from the wizarding world.
Obviously, Harry Potter would be the main character as the title implies. But his friends like Ron Weasley and Hermione Granger are also very likely to be important characters. Since they've been through so much with Harry, they might be among those who are called upon to pay their debts, or they could help Harry in the process of calling in debts from others.
Obviously, Harry Potter himself is the central character. Others could include Ron and Hermione, who have been by his side through many life - threatening situations and might also be in debt to him in some way, for example, if Harry saved them from a particular dark spell during a battle. Also, Neville Longbottom could be involved as Harry saved him from Voldemort during the Battle of Hogwarts.
Hermione Granger might also be a common character in such fanfictions. Given her intelligence and the times she has been in dangerous situations, there could be scenarios where someone owes her a life debt. For instance, a character she saved from a dark wizard might then be bound by a life debt to her, and their relationship could be explored in the fanfiction.
Well, obviously Harry Potter himself would be the central character. He has always been a fighter for what's right in the original series, so it makes sense for him to be the main character in a fanfiction about justice.
Obviously, Harry Potter himself is a central character. There could also be members of the families involved in the blood feud. For example, if it's a feud between two pure - blood families like the Malfoys and the Weasleys, we would expect to see Draco Malfoy and Ron Weasley in the story. And of course, Hermione would likely be by Harry's side, using her intelligence to help him figure things out.
Perhaps Harry Potter uses the life debts to reform the wizarding world. He calls in these debts to get support for new laws and regulations that would benefit the marginalized groups in the wizarding community. He could ask those indebted to him to vote for him in the Wizengamot or help him spread awareness about his new ideas.
Another plot could involve Harry calling in life debts from multiple characters at once to mount a large - scale defense against a new threat. These characters, bound by their life debts, would have to put aside their differences and work together. This would showcase Harry's strategic thinking and also explore the complex relationships between different characters in the fanfiction world.
Obviously, Harry Potter himself would be the central character. He's the one getting the tattoos after all.
The villains in the Harry Potter series, such as Voldemort or his Death Eaters, could also play important roles. Harry's anger might be directly related to their actions. For instance, if Voldemort were to target someone Harry cares about again, it could be the trigger for his extreme anger. His interactions with these villains in the fanfiction would be full of tension and high - stakes confrontations.