Obviously, Natsu is a main character. He is the central figure in most dragon slayer fanfictions. Also, his friends like Lucy, Gray, and Erza often play important roles. They support Natsu in his battles and adventures, and their unique abilities and personalities add depth to the story.
Natsu is, of course, the main focus. But characters such as Happy, his flying cat sidekick, are also quite prominent. Then there are the other dragon slayers like Gajeel. They might interact with Natsu in various ways, sometimes as rivals, other times as allies. And don't forget about the dragons themselves, who may appear in flashbacks or even in the present to influence the story.
Main characters in natsu 3rd generation dragon slayer fanfiction are predominantly Natsu. He is the driving force in the story. However, antagonists can also be considered main characters in a sense. For example, powerful dark mages or evil dragons that oppose Natsu. These characters create conflict and tension, which are essential elements of a good fanfiction. Additionally, new characters that are introduced specifically in the fanfiction to add new twists to the story can also be important.
One interesting plot could be Natsu facing a new, extremely powerful dragon that is immune to his regular attacks. This forces him to discover a new form or power within himself. Another plot might involve Natsu traveling to a different dimension where the rules of dragon slaying are completely different and he has to adapt quickly.
In some fanfictions, there might be original characters created by the author. For instance, a mysterious figure who has some connection to Natsu's multi - dragon slayer abilities. This character could be an antagonist, testing Natsu's skills, or a mentor, guiding him to master his powers better.
Obviously, Natsu is one of the main characters. He is the strongest dragon slayer in this fanfiction. His friends from Fairy Tail like Lucy, Gray, and Erza are also likely to be main characters. They often support Natsu in his battles and adventures.
One great fanfiction could be 'Natsu's Ascent'. In this, Natsu discovers new powers as a third - generation dragon slayer and goes on a journey to find a hidden dragon lair. It has a lot of action and great character development.
One of the main characters could be Happy, Natsu's loyal flying cat companion. Happy would likely be by Natsu's side during his retirement, still providing his comical relief and support. Another character could be Lucy. She might be concerned about Natsu's retirement decision and try to understand his reasons, or she could also be retiring from her own magical adventures and join Natsu in his new peaceful life.
Sasuke could also be involved. In many Naruto - related fanfictions, Sasuke is often part of the story. He might be initially skeptical or even jealous of Naruto's connection with the dragon soal. His rivalry with Naruto could take on new dimensions with the addition of the dragon element.
Well, Harry Potter himself is often a main character. He might be the one to interact with the dragon, either befriending it or facing some sort of conflict related to it.
It could be a powerful dark wizard who sees Natsu as a threat because of his alpha status among dragon slayers. This wizard might want to eliminate Natsu to gain control over the dragon slayers or to carry out some evil plan without interference.
There might also be some dark magic - using villains who want to use Natsu's alpha dragon slayer powers for their own evil purposes. They could try to capture him or manipulate him in some way. Maybe they plan to extract his power to create a powerful weapon or something.
In the 'king of dragon slayer fanfiction', Natsu is likely a central figure. He might have special powers related to slaying dragons, like breathing fire or having enhanced strength. His character could be developed in ways that are different from the original series, perhaps with new relationships and challenges within the fanfiction world.