Well, apart from the classic trio, there could be new characters introduced specifically for this fanfiction. Maybe a devil - like figure who is the main antagonist. This character could have unique powers and motives that are related to the devil concept. There might also be some characters from the wizarding families who have a special connection to the devilish happenings, and they become important in the story as they either help or hinder Harry and his friends.
It's likely that Harry Potter himself remains a main character. Since it's a fanfiction related to the Harry Potter series, he would probably be at the center of the story, dealing with the devil - related elements. Hermione and Ron might also be main characters, as they are Harry's closest friends in the original series and would likely be involved in whatever strange events are happening in this fanfiction.
In 'Harry Potter the Devil fanfiction', Harry is surely a main character. But we may also see some minor characters from the original series taking on more prominent roles. For instance, Neville Longbottom could play a crucial part in combating the devil - influenced forces. And there could be a mysterious character, perhaps a dark wizard from the past who has some connection to the devil and resurfaces in this fanfiction to cause chaos. The character interactions among these various characters would be what drives the story forward.
Chapter 668, "This is my son, Chen Qijun!", is the clearest early answer because it turns Wen Feifei's situation into a concrete plot event. The chapter gives readers a real answer by opening on The guitarist explained seriously, "This is not just any guitar; it's...
Chapter 233, "Individual, Ten, Hundred, Thousand... Million, Ten Million, Damn!!!", is the clearest early answer because it turns Individual's situation into a concrete plot event. A useful checkpoint is the way the scene starts with [What the hell, what's this about life span ending??
Chapter 663, "How Did These Two Start Fighting?!", is the clearest early answer because the buildup finally cashes out in a real clash. A useful checkpoint is the way the scene starts with Jiang Shixu received the message in daylight the next day.
Chapter 371, "Oh, Isn't This an Old Acquaintance?", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on #He Yun Thanks Jiang Li# #He Yun Bows# #LiHe CP# The interview wasn't...
Chapter 652, "He's Gu Shengrong's Grandson?!", is the clearest early answer because it turns Gu's situation into a concrete plot event. The chapter gives readers a real answer by opening on The propellers lifted off again, and Team Q was already on their way...
Chapter 568, "Not at All", is the clearest early answer because it turns Crown Prince's situation into a concrete plot event.
Chapter 376, "I'm Just Afraid You Don't Need Me Anymore", is the clearest early answer because it turns Jin Siyue's situation into a concrete plot event. Early on, The phone call fell into a long silence.. By the end, A week passed like this before she finally brought gifts to the....
Chapter 290, "The Jiang Family is to be Destroyed", is the clearest early answer because it turns Lili's situation into a concrete plot event. Early on, It was nearly evening when Jiang Li checked into Beijing Hospital..
Chapter 452, "Party of Four", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Shang Shuyue glared at Jiang Yan, struggling to find the words to say.
Chapter 542, "He is My Ideal Type", is the clearest early answer because it turns Yu Li's situation into a concrete plot event.