Definitely Draco and Sirius Black. Sirius is a rebel in the Marauders' group, and Draco is from a traditional pure - blood family. Their clash of values and personalities would be fascinating. Sirius might be really skeptical of Draco at first, but as they get to know each other, they could find some common ground.
I think Draco and James Potter could have the most explosive interactions. James was a bit of a bully in his youth, and Draco has his own haughty attitude. They would likely start off on the wrong foot, but as the story progresses, they could learn from each other and maybe even become friends, which would be a huge transformation for both characters.
Draco and Remus Lupin would also be an interesting pair. Remus is the more reserved and intellectual one among the Marauders. He might see through Draco's bravado and try to understand his real intentions for time traveling. Their conversations could be full of depth, with Remus trying to guide Draco towards a better path.
The interaction between Lily Luna Potter and her father, James Potter, would be really interesting. She would get to see him as a young, carefree student, full of mischief. It would be a chance for her to understand him in a different light, not just as the father she knew from stories. And for James, he would be meeting his daughter from the future, which would be quite a shock and would likely change his perspective on many things.
One possible plot could be Hermione using her knowledge to help the Marauders in some way. For example, she might assist them in dealing with a difficult spell or situation that they were struggling with in their original time. Another plot could be her trying to change certain events that she knows will have negative consequences in the future, but then facing the moral dilemma of interfering with time.
One interesting plot could be Draco going back in time and trying to change the course of events related to the Marauders to benefit the Slytherin house. Maybe he tries to stop James Potter from bullying Snape, which in turn could have a huge impact on the future relationships at Hogwarts.
Rick is an obvious choice. His intelligence and knowledge of the multiverse can add a lot of depth to the time travel story. He could be the one helping Morty fix the problems caused by time travel, or he could be the cause of the problems in the first place. Another interesting character is Summer. She could get involved in Morty's time travel adventures, and her different perspective as Morty's sister can bring new elements to the story. Maybe she's jealous of Morty's time - traveling and tries to tag along.
They might be shocked by how much has changed. For example, the technology in 1995 would be very different from their time. They could also have interesting interactions with the characters in that era.
Kazama Chikage might be an interesting choice as well. He is a powerful and somewhat arrogant character. If he time - travels, perhaps to a past era where his clan was even more powerful, he could try to change history to make his clan even more dominant. Or if he travels to a future where his power is nothing compared to modern technology, his struggle to come to terms with his new position in the world would be an interesting plotline.
Iroh would be fascinating to see time - traveling. He has so much wisdom already. If he traveled to different times, he could share his knowledge and perhaps change some key events. He could also gain more insights from other time periods, which would further enrich his already deep understanding of the world.
I think it's not just the Marauders. There might be other characters who are important in the time - travel aspect. For instance, there could be a character who guides them through time or someone from the future or past that they encounter during their travels. But the Marauders are surely central as they are the ones with the time - travel adventure.
Well, if the marauders time - travel to the future in fanfiction, they could encounter their descendants or people who know their stories. It would be a strange experience for them. Maybe they would use their magic in unexpected ways in this new and different world. They could also get into trouble as they might not understand the laws and regulations of the future.
Well, if the Marauders time travel to the future in fanfiction, they would first have to deal with the cultural shock. The future society might have very different values and social norms. They would also encounter new forms of magic or maybe even a world where magic and technology have merged in ways they couldn't have imagined. And their relationships with each other would likely be tested as they adapt to the new environment.