A common theme is the power dynamic between them. Given Magneto's powerful control over magnetism and Rogue's power - absorbing ability, their relationship often revolves around who has more power in different situations.
A more detailed title could be 'In the Grip of Magneto: The Kidnapping of Rogue in Fanfiction'. Here, the phrase 'In the Grip of Magneto' gives a sense of Rogue being in Magneto's power due to the kidnapping, which is the central plot of the fanfiction.
One great piece of Rogue and Magneto fanfiction is 'Magnetic Attraction' which explores their complex relationship in a post - apocalyptic world. It has great character development and some really interesting plot twists.
One plot twist could be that Rogue actually has a hidden power that Magneto didn't know about and she uses it to turn the tables on him. Maybe she can absorb his magnetic powers in a different way than expected.
The shared responsibility of the baby can bring them closer. They'll have to communicate more about the baby's needs, like feeding, sleeping, and its emerging powers. This constant interaction can deepen their bond.
Their relationship can become more protective. Logan will be extra vigilant about keeping Rogue and the baby safe. Rogue might become more dependent on Logan in some ways, especially when it comes to physical protection. Also, they might have more tender moments as they take care of the baby together.
Well, it could be an original character who was hidden away from Magneto for some reason. Maybe a human - mutant hybrid that Magneto didn't know about. This son could have powers that are not fully developed at first, and through his encounter with Magneto, he starts to discover and master his abilities. He could be a character who was raised by a family that was against Magneto's ideas, so there's a lot of conflict when they meet.
On one hand, it could potentially bring them closer in a strange way. If Professor X uses the mind control to show Magneto something positive, like a future where mutants and humans live in harmony, Magneto might initially be angry but then start to see Professor X's point of view. However, it would still be a rocky relationship as Magneto would always remember that his mind was invaded. He might see Professor X as both a friend and a foe, depending on the situation.