There are fanfictions where they meet in a dangerous situation. For example, in a Forbidden Forest encounter. The Marauders are exploring, and Regulus has gotten lost. They initially suspect each other of ill intentions but then realize they need to work together to get out. And there's also the type where they meet at a pure - blood event, which challenges their different beliefs about blood purity and friendship.
Archive of Our Own (AO3) is a great platform for 'Marauders meet Regulus' fanfiction. It has a large collection with various interpretations of their meetings. Fanfiction.net is also a well - known platform where you can find such stories. There are different tags and filters to help you find exactly what you're looking for.
They might start off as enemies. Sirius doesn't get along with his family, so he may not want the Marauders to have anything to do with Regulus. But sometimes, they could end up working together for a common good.
Sirius would probably be angry at first in the fanfiction. He left his family and Regulus was still part of it. But as the story progresses, he might start to feel some regret or longing for his brother. James would be supportive of Sirius' emotions, and Remus would be the voice of reason, analyzing Regulus' actions and motives.
Obviously, the Marauders which include James Potter, Sirius Black, Remus Lupin, and Peter Pettigrew. And then there are the Evans family members. Most likely Lily Evans, who is quite important as she has her own story arc and connection to the Marauders, especially James. There might also be other Evans siblings or family members depending on how the fanfiction is written.
In this fanfiction, it could be that the future has a new Dark Lord. The Marauders are brought forward in time to stop this new threat. They face challenges like understanding the new forms of magic and technology that the future Dark Lord has harnessed. They also have to deal with the fact that the future wizarding world has different social and political structures. They might start by infiltrating the Dark Lord's lair using their Marauder's Map - like skills, but find that the map doesn't work as well in the future, leading to all sorts of interesting and dangerous situations.
The main characters would be the Marauders, which include James Potter, Sirius Black, Remus Lupin, and Peter Pettigrew. And of course, Tonks is also a main character in this fanfiction.
In this fanfiction, perhaps the Marauders would be quite intrigued by Tonks' unique Metamorphmagus ability. They might initially be a bit confused or even amused by how she can change her appearance at will.
Well, it could be a really heartwarming scenario. The marauders might be shocked at first to see how much their grandchildren resemble them or their children. They could share stories of their adventures, passing on their wisdom and perhaps even some magical tricks.
The Marauders meeting Ginny in a fanfiction could lead to all sorts of interesting scenarios. Maybe Ginny is a bit star - struck at first, since the Marauders are sort of legends in the wizarding world. They could exchange stories about Hogwarts. Ginny might tell them about how the school has changed over the years, and the Marauders could regale her with tales of their own school days. It could also be a story about Ginny learning from the Marauders' more unorthodox ways of using magic.