In most 'Lucy the Lightning Dragon Slayer' fanfictions, Lucy herself is front and center. But we also see a lot of the guild master, Makarov. He is often the one guiding Lucy in her journey with her new powers. He gives her advice on how to control it and use it for good. And then there are the other guild members. Happy, for example, might accompany Lucy on some of her adventures and provide some comic relief. The villains in these fanfictions also become important characters as they are the ones that Lucy has to face off against with her lightning - based powers.
A popular 'Lucy the Lightning Dragon Slayer' fanfic is 'Lucy's Lightning Legacy'. It's set in a different timeline where Lucy is the sole Lightning Dragon Slayer in the world. The story delves deep into how she changes the fate of the magical world with her powers. It has a lot of action scenes where Lucy battles against powerful dark mages using her lightning - based attacks. There are also some great character interactions, especially with her guildmates who are both in awe and a bit scared of her new powers at first.
One interesting aspect could be how she trains to become a Celestial Dragon Slayer. Maybe she discovers an ancient magic that combines the two, and she has to learn to control the newfound power. This could lead to some great character development as she struggles with the increased power and the responsibility that comes with it.
Well, if we consider Lucy as a Dragon Slayer in fanfiction, her magic could be really different from the traditional ones. Maybe she'd have a connection to a celestial dragon, which would be so cool. It would combine her existing celestial spirit magic with the new dragon slayer powers. She could use the stars as a source of power, similar to how other dragon slayers use elements, and it would be a fresh take on her character.
Other dragon slayers could be her potential allies. They might recognize her skills despite her being a princess. Also, magical creatures who are enemies of the dragons, like phoenixes or griffins, could side with her. And some wise old wizards or witches who see her potential might offer their help.
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.
Another theme could be friendship. In the context of being a dragon slayer, Lucy's relationships with her friends, whether they are also slayers or just her regular comrades, are likely to be explored. Her friends might support her in her new role, or there could be some conflicts related to her new power. Usually, how these relationships evolve is an important part of the fanfiction.
Power and growth are common themes. The slayer usually starts with a certain level of power and has to grow stronger. For example, in many fanfictions, they learn new techniques to defeat stronger enemies.
There could be a 'Dragon Slayer Lucy' fanfiction where she embarks on a quest to find a missing dragon slayer. Along the way, she uncovers secrets about the origin of dragon slayers. She might also develop a romantic relationship with another character in the story, perhaps a fellow mage who helps her on her journey. This relationship could add an interesting layer to the story as they face various obstacles together.
She could have the ability to breathe celestial - themed 'dragon breath'. For instance, it might be a blast of star - like energy that can pierce through dark magic. Her celestial spirits might also gain new forms or abilities. For example, Aquarius could become a more combat - ready mermaid with dragon - like fins that can slice through water and enemies.