The rogue could be a disgruntled ex - knight who was wrongfully banished from his order. He sees kidnapping Lucy as a way to get revenge on the kingdom or the people who wronged him.
One possible plot could be that Rogue somehow gets transported to Lucy's world and they have to figure out how to get him back. During this time, they start to understand each other better. Lucy might learn about Rogue's past and his struggles, and Rogue could see the kindness and strength in Lucy. They could develop a friendship or something more as they face various challenges in the Fairy Tail world.
One idea could be that Future Rogue travels back in time and meets Lucy before the events of the main story. He initially hides his true identity but gradually forms a bond with her as they go on adventures together. They might face a common enemy that only their combined powers can defeat.
One great X - Men Rogue fanfic is 'Rogue's Redemption'. It delves deep into Rogue's character, exploring her struggles with her powers and her place among the X - Men. The story has a great plot that keeps you hooked from start to finish, with interesting character interactions, especially between Rogue and Gambit.
Well, often in Logan x Rogue fanfic, there's a sense of forbidden love. Given Rogue's power and the risks involved in physical contact, it gives a Romeo - Juliet - like feel. The fanfic also tends to focus on their mutual understanding. They both have their own traumas and in these stories, they find solace in each other. And there's the aspect of loyalty, as they are loyal to each other in the face of various threats and challenges in the X - Men world.
Lucy, on the other hand, might become more independent yet also more vulnerable. She is used to being strong on her own, but now she has to rely on Rogue and others more. This pregnancy could also strengthen her magical powers in some unexpected ways as her body is changing due to the pregnancy.
One idea could be that Rogue discovers Lucy is pregnant and is initially in shock but then becomes extremely protective. He might start learning about how to take care of a pregnant woman and the coming baby. For example, he could read books on pregnancy and baby care in secret.
In the fanfic, Lucy could develop a more adventurous side. Since Rogue is often involved in more dangerous and shadowy things, she might be drawn into that world and have to adapt. For Rogue, being around Lucy could make him more in touch with the positive aspects of the magical world. He might start to question his own darker tendencies and strive to be a better person. This could lead to him making different choices in battles and in his relationships with others.
For Future Rogue, his personality could be developed by showing his struggle with his past actions in the future. When he meets Lucy, he could start to soften and become more open. Lucy, on the other hand, could grow in confidence as she teams up with Rogue. She might become more assertive in battle and in decision - making.
One common theme is the struggle with their powers. Rogue's power to absorb memories and abilities through touch and Gambit's kinetic energy powers can create a lot of drama. For example, how they deal with the fact that Rogue can't touch Gambit without hurting him at first.