Obviously, Harry is one of the main characters. There could also be some original characters created specifically for the Salem setting, like a local witch who befriends Harry. And sometimes Hermione or Ron might make an appearance, especially if the story involves some sort of connection between Hogwarts and Salem.
The main character is Harry, no doubt. But in 'Harry goes to Salem fanfiction', we frequently see a group of Salem - based magical beings. For example, there could be a coven of witches who play important roles. They might be either helpful or a hindrance to Harry depending on their motives. Also, there could be a character who is a magical historian in Salem, who helps Harry uncover secrets about the place's magic and its connection to his own magic from Hogwarts.
Harry is the central figure. In addition to the well - known Camelot characters like Arthur and Merlin, Guinevere can also be a main character in some fanfictions. She could play a role in Harry's integration into Camelot society. There might also be some original characters created by the fanfiction author, like a young apprentice in Camelot who becomes Harry's friend and helps him understand the ways of Camelot. Another often - seen character is Morgan le Fay. She could be an antagonist to Harry, seeing his presence as a disruption to her plans in Camelot.
Well, Harry is obviously one of the main characters. He's the one who is going to Harvard. There might also be some original characters created for the fanfiction. These could be Harry's classmates at Harvard, like a brilliant but eccentric roommate who helps Harry understand the ropes of the university.
Well, obviously Harry Potter himself is the central character. Hermione and Ron are almost always involved too. They would be the ones trying to figure out what's wrong with Harry and how to fix him. Dumbledore might also play a major role, as he often has deep knowledge about magic and could potentially help Harry regain his sanity.
There could be a young Salem witch named Lily. She befriends Fem Harry Potter and shows her around Salem. Lily could be very knowledgeable about the local magic and help Fem Harry Potter understand the differences between Hogwarts magic and Salem magic.
Neville Longbottom can also be a main character in some 'Harry Potter goes back in time' fanfictions. Given his growth and importance in the original series, in the fanfic, Harry might go back and help Neville become more confident earlier. This could have a significant impact on the fight against Voldemort as Neville could then be an even more powerful ally from an earlier time.
Obviously, Naruto is the central character as the title 'naruto goes mad' implies. Sasuke often plays a crucial role too. He might be the cause of Naruto's madness in some cases, like if he betrays Naruto again in a more extreme way. Sakura could also be involved, perhaps trying to bring Naruto back from his madness. And Kakashi, as Naruto's former teacher, may try to figure out what's wrong with Naruto and find a way to help him.
Well, obviously Harry is one of the main characters. He brings his own backstory and skills from the original Harry Potter series. There might also be new characters created specifically for this fanfiction, like a wise old teacher at Stonewall who helps Harry adjust to the new place.
Well, Harry is obviously one of the main characters. Since it's a fanfiction about him going to the Hellmouth. There might also be characters from the Buffyverse, like Buffy herself. If the story is set in a way that combines the two universes, she could play a significant role in helping Harry navigate the Hellmouth and its dangers.
A young witch named Lily who is new to Salem School and is trying to find her place among the different cliques. She has a natural talent for potion - making but struggles with charms.
Harry Potter is usually one of the main characters, of course. Since it's a Harry Potter fanfiction, he often plays a central role in the story involving dragons. Hermione and Ron are also likely to be main characters as they are Harry's closest friends and are always involved in his adventures.