In many fanfictions, Natsu's character develops by becoming more responsible. As the Red Dragon Emperor, he has greater power and with it comes more responsibility. He starts to think more about the consequences of his actions and how they affect not only his friends but also the world around him.
Often, Natsu's development involves learning to control his new powers better. Since the power of the Red Dragon Emperor is so great, he has to train hard to master it. This process of training and self - discovery makes him more disciplined and patient, which are traits that were not as prominent in his character before. For example, he might have to meditate to access deeper levels of the Red Dragon Emperor's power, which is something he would have found boring in the past. Through these experiences, he matures as a character.
Often, Natsu becomes more confident. With the Dragon Force, he realizes his greater potential, which boosts his self - assurance.
There could be a fanfiction where Natsu, as the Red Dragon Emperor, has to face an ancient evil that was sealed away long ago. In this story, his friends might not be able to help him directly at first, and he has to rely on his own wits and the power within him to overcome the initial challenges before they can all join forces to defeat the ultimate evil.
Natsu's character development in this fanfiction might involve him becoming more responsible. With his end form, he has greater power and with that comes the need to use it wisely. He could start to think more about the consequences of his actions. For example, he might not rush into battles as blindly as he used to. Also, his emotional growth could be a part of it. He could become more in tune with his feelings towards his friends, especially Lucy. His loyalty to the guild could also deepen as he realizes his new form can be a great asset to protect Fairy Tail.
One interesting Natsu Dragon Emperor fanfiction could be one where he goes on a journey to a new, unknown land full of ancient dragon magic. In this fanfic, he might encounter new types of dragons and have to learn different forms of dragon slayer magic.
In fanfiction, if Natsu turns into a dragon, his character development would be a journey. He would have to face his own self - doubts. As a dragon, he has more power, but with that comes responsibility. He would need to learn how to control his dragon instincts, like aggression and territoriality. This process would shape him into a more mature character. His relationships would also change. Some characters might look up to him more, while others might question his humanity. Through all these experiences, Natsu would grow and become a different kind of hero in the Fairy Tail world.
Her character development can be different in terms of relationships. As a female, she might be more empathetic towards other female characters in the guild, which could lead to different friendships. For example, she could form a closer bond with Lucy in a more sisterly way. In terms of her magical development, she may approach it with a different mindset. Maybe she's more cautious or strategic compared to the impulsive male Natsu. This could lead to her learning spells in a different order or mastering them in a different way.
Well, in many fanfictions, their relationship might start with Natsu being a bit in awe of Mavis as she is a very important figure in Fairy Tail's history. Natsu, being his brash self, might initially make mistakes around her but gradually learns from her wisdom. As time goes on, he could come to respect her even more deeply and they might form a bond where Mavis becomes like a guiding light for Natsu in his adventures and growth within the Fairy Tail guild.
In many mature fanfictions, their relationship develops through shared hardships. For example, they might face a powerful enemy that forces them to rely on each other more deeply. This can lead to a greater understanding and a more intense emotional connection between them.
Natsu would likely become more responsible. Taking care of a baby is no easy feat, and he'd have to learn things like being gentle and patient, which are not his usual strong suits. This would be a big step in his character growth.
Natsu would likely become more solemn. He was always the fun - loving, energetic one. But with Fairy Tail gone, he'd have to grow up fast. He might become more calculating in his battles, instead of just charging in like he used to.