The main characters are most probably the dragon slayers, who are presumably strong and skilled in slaying dragons. Their mates are also likely to be main characters. These mates could have special abilities or characteristics of their own. Additionally, there could be supporting characters such as friends or mentors of the dragon slayers, who might play important roles in the story, for example, by giving advice on how to deal with threats to their mates or by helping in battles against those who would 'mess' with them.
I'm not sure specifically as I haven't read this particular fanfiction. But generally, it might be about characters who are dragon slayers and their mates, and perhaps some sort of warning not to cross or interfere with them.
I'm not sure specifically as it could vary a great deal. It might be about a character who is a dragon slayer and his or her mates in a fan - created fictional story. Maybe it involves some sort of conflict where others are warned not to mess with this dragon slayer and their group.
Natsu and Lucy are quite popular. Their chemistry in the original Fairy Tail series makes it easy for fans to imagine them as mates in the fanfiction world. Another popular pairing could be Gray and Juvia, as their relationship has always had a lot of potential for further development in this type of fan - created stories.
Typically, the main character is the dragon slayer. They are often a brave and determined individual with unique skills and a strong will.
Since I don't have the actual fanfiction, it's hard to say for sure. But it's likely that the dragon slayer is a main character. There could also be other characters like villagers who are being affected by the situation related to 'the nothing' and perhaps other dragon slayers or mentors.
In some fanfictions, Happy, the flying cat, could also be an important character. He could provide comic relief and also be involved in some of Lucy's adventures as a dragon slayer. For example, he might help her find clues or get out of difficult situations. And then there could be original characters created specifically for the fanfiction. These characters could be other dragon slayers or powerful mages that interact with Lucy in different ways.
It's possible that there's a love interest for Percy in the fanfiction. This character could be another adventurer or someone from Percy's past. Their relationship could add an emotional aspect to the story, as Percy has to balance his feelings for this person with his dangerous job as a dragon slayer.
One interesting aspect could be the unique bonds formed between the dragon slayers and their mates. For example, they might have special powers that combine in unexpected ways. It could also explore how they face challenges together, like battling powerful enemies that threaten their world or their relationship.
Well, Naruto is a must - have main character. He might be the one who unlocks the dragon slayer bloodline's true potential. Hinata could be another main character, her Byakugan ability might interact in interesting ways with the dragon slayer powers. There could also be a mysterious character who is an elder of the dragon slayer bloodline clan. This character could hold the key to understanding the bloodline's history and secrets, and thus be an important main character in the fanfiction.
Well, obviously Lucy is one of the main characters since it's in the title. She's likely to be the central figure around which the story revolves. There might also be other dragon slayers who could be important characters. They could be friends or rivals to Lucy, and their interactions with her would shape the story.