Obviously, Albus Potter and the Marauders - James Potter, Sirius Black, Remus Lupin and Peter Pettigrew. There might also be some other characters like Albus's friends or professors who could be involved in the story.
Albus Potter is the central character from the modern era. As for the Marauders, James Potter is key as he was Albus's grandfather. Sirius Black would be the cool and daring one, always getting into trouble. Remus Lupin, with his knowledge and kindness, would be someone Albus could look up to. Peter Pettigrew, despite his later actions in the original story, could still be part of the group in the fanfiction, maybe with a chance of redemption. Additionally, we might see Albus's classmates like Scorpius Malfoy getting involved in some way, either helping or hindering Albus's encounters with the Marauders.
There could also be some minor characters from the Marauders' era that might become more prominent. For example, Lily Evans, Harry's mother. Her relationship with James and how she might interact with Harry in this strange time - traveling or spirit - meeting scenario could be really interesting. And then there are the Hogwarts professors from both eras that could be involved, like Professor McGonagall, who could either be a guiding force or be a bit skeptical of Harry's new interactions.
The fanfiction could show Albus Potter learning about the Marauders' values and how they formed their strong bond. He might be in a situation where he needs to form his own group of friends like the Marauders did. The Marauders could also help Albus deal with the pressure of being a Potter. For example, they could tell him how James Potter coped with all the attention he got, and this would give Albus some perspective on his own situation at Hogwarts.
Obviously, Ginny Weasley is one of the main characters. She's a strong - willed and brave witch. The Marauders, which include James Potter, Sirius Black, Remus Lupin, and Peter Pettigrew, are also likely to be main characters. They are known for their mischief - making and loyalty to each other. Dumbledore might also make an appearance as he was around during the Marauders' time and would surely have some role to play if Ginny is interacting with that era.
The main character is James Sirius Potter. As for the Marauders, James Potter would be important as he's James Sirius Potter's father. Sirius Black would bring his wild and rebellious nature into the story. Remus Lupin with his kind heart and werewolf secret could add depth. And even Peter Pettigrew, despite his later actions, would be part of the group dynamic in the fanfiction. There might also be other characters from Hogwarts during the Marauders' time or James Sirius Potter's time who interact with them.
Well, aside from Teddy and the Marauders, there could be other characters as well. Maybe some of Teddy's friends or classmates from his own time who are somehow involved in his journey to meet the Marauders. For example, if Teddy discovers a time - traveling spell in the library with the help of a studious friend. But the core characters would still be Teddy Lupin and the Marauders. Teddy is the link between the present and the past in this story, and the Marauders are the ones with all the stories and experiences from their time at Hogwarts.
Obviously, the marauders themselves - James Potter, Sirius Black, Remus Lupin and Peter Pettigrew. They would be central to the story as they are the ones the fanfiction is named after.
In some fanfictions, other characters like Dumbledore might also play important roles. He could be the one who arranges the encounter between Harry and the Marauders, either knowingly or unknowingly. And Hermione and Ron might also be involved in some cases, perhaps helping Harry understand the implications of meeting his father and his friends from the past.
The main characters would be Albus Severus Potter, Harry Potter, and Ginny Weasley. Albus is the character through whose eyes we see the story unfold. Harry and Ginny are the parents he meets. Harry, with his experience of defeating Voldemort, and Ginny, a powerful witch in her own right, both play important roles in this fanfiction as they offer wisdom and love to their son.
The main characters would surely include Harry Potter. Since it's about him meeting the founders, he's central to the story. As for the founders, they are key too. Godric Gryffindor might be the most enthusiastic about meeting Harry, seeing in him the true spirit of Gryffindor. Helga Hufflepuff could be the nurturing one, teaching Harry about the importance of hard work and loyalty. Rowena Ravenclaw might offer him wisdom, and Salazar Slytherin could present a more complex relationship, as his views on blood purity might clash with Harry's, but still be an important part of the story as Harry tries to understand and reconcile different magical ideologies.
Well, the main ones are Draco Malfoy and Harry Potter. Draco, who has his own journey of redemption in some of these fanfics. Harry, who is always the key figure in any story related to Hogwarts. And then there are the Marauders. James, the confident and sometimes arrogant Gryffindor, Sirius, the rebellious and loyal friend, Remus, the calm and intelligent werewolf, and Peter, who adds an element of mystery and betrayal.