Erza could also be a main character. Given her strong and motherly side, she would probably take on the role of taking good care of baby Lucy. She might be strict about following a routine for baby Lucy's care. Happy, the flying cat, could be another important character. He could use his unique abilities to search for clues on how to turn Lucy back to normal.
Another possible main character could be a wizard who is an expert in transformation magic. He could be brought in to help reverse the spell on Lucy. He might be a bit of an eccentric character, with his own set of rules and methods. He would study Lucy's condition carefully and work with the others to find a solution.
Her best friend could be important. The friend might offer emotional support, babysit sometimes, or give Lucy some parenting tips that she learned from her own family.
A midwife or a doctor in the area where Lucy ends up could be a main character. Since she's pregnant, she'll need medical assistance. This character could be kind and understanding, providing not only medical help but also emotional support. And then there could be a local villager who initially suspects Lucy but then becomes her ally as they get to know her story.
There could be a human friend of Lucy, like a boy named Tom who is curious about her non - human nature and becomes her confidant. He helps her navigate the human world.
There could be a young wizard named Tom. He might be Lucy's sidekick or someone she mentors. He could have his own set of magic skills that complement Lucy's dragon powers. Another character could be an old dragon sage named Zoltar. He might be the one who gives Lucy advice and wisdom about her role as the dragon goddess.
Maybe it could be about a magic spell that accidentally turns Lucy into a baby. Then her friends have to figure out how to reverse the spell while taking care of baby Lucy. They might encounter various challenges and comical situations during this process.
The father of the baby could be a major character. He could be a loving partner, or there could be some drama if he's not as committed as Lucy. Her best friend could also be in it. The best friend might be the one she confides in about all her pregnancy fears and joys.
One character that would be interesting to include is Mirajane. She has a motherly and observant nature. She could be the one to nudge Natsu and Lucy in the right direction when it comes to their relationship. For instance, she might arrange for them to go on a mission together that she knows will bring them closer. Laxus could also be in the fanfiction. His powerful presence can create a sense of danger or protection. If there's an outside threat to the guild while Natsu and Lucy are exploring their relationship, Laxus could be at the forefront of defending the guild, which would impact Natsu and Lucy's situation. And don't forget about Cana. She could be the one to create some light - hearted chaos, like daring Natsu and Lucy to do something that ends up bringing them closer, such as a bet that leads to a shared adventure.
Lucy could face the challenge of understanding the dragon's language or its needs. Since it's a baby, it can't communicate clearly. And if the dragon is from a different part of the magical world, it might have needs that Lucy has never encountered before. For example, it might need a certain type of magical environment to thrive. So, Lucy has to either create that environment or find a place that already has it. This would involve a lot of research and exploration in the magical world she lives in.
Well, Lucy is known for her growth throughout the series, and in fanfiction, she continues to develop, especially in relation to Yukino. Yukino, on the other hand, has her own set of skills and a somewhat reserved personality. Their interactions in the fanfiction can range from friendly rivalries to deep emotional bonds. For example, in some fanfictions, they might start as rivals for a certain magic item or a position in a magical competition, but then gradually become friends as they understand each other better.
His guildmates would surely be main characters. For example, Natsu could be there. Natsu might be really confused at first but then would be super protective of baby Laxus. Another could be Lucy. She might be the one who is more practical in taking care of the baby, like making sure he has proper clothes and a comfortable place to sleep.