Well, one possible plot could be that a villain casts a spell on Nightwing. His friends then have to take care of baby Nightwing while trying to find a way to reverse the spell. They might discover new and cute things about him, like his love for a particular toy or food.
Obviously, Nightwing himself, even as a baby, would be a main character. His friends in the Bat - family like Batman, Robin, and Oracle would also be main characters. They would be the ones dealing with the situation of baby Nightwing.
Batman could be a main character. Since Nightwing was trained by Batman, in a baby Nightwing fanfiction, Batman could be the one taking care of him, teaching him basic skills, and protecting him from the threats of Gotham.
One popular Nightwing baby fanfiction might involve him taking care of a baby with special powers. In some stories, the baby could be a symbol of hope in a dark Gotham. The story may focus on Nightwing's growth as a protector not just of the city but also of this innocent life.
I'm not sure about a specific one, but you can look for ones that have high ratings and reviews on fanfiction websites. They usually indicate a well - written and engaging story.
Maybe there was a magical mishap. A powerful wizard was trying to cast a spell on another dimension but it backfired and hit Supergirl instead, turning her into a baby. In the fanfiction, Kara's friends like Lois Lane could try to take care of her in a more human way since she has lost all her powers as a baby. They would have to keep her identity a secret too.
One possibility could be that a powerful spell was cast on the superheroine by a villain. Maybe the villain wanted to weaken her and thought turning her into a baby would be the best way. In the fanfiction, the superheroine's friends would then have to figure out how to reverse the spell while also protecting the now - helpless baby version of her.
One idea could be a story where Baby Nightwing is discovered by the Justice League. They have to figure out how to take care of him while also protecting him from villains who might want to use him. Another could be a time - travel story where an older hero goes back in time and meets Baby Nightwing, and has to ensure his safety so that the future doesn't change.
For Nightwing, you can show his transition into fatherhood. He might be a bit more cautious in battles because he has a family to think about now. He could also teach the baby some of his detective skills. For Starfire, her maternal instincts would be a big part of her character development. She might use her alien knowledge to help the baby understand its unique heritage. And she would be very protective, using her powers to shield the baby from harm.
One idea could be that the baby has some unique superpowers that are a combination of Nightwing's skills and Starfire's alien abilities. For example, it could have enhanced acrobatic skills like Nightwing and the power to fly or shoot energy blasts like Starfire. Another plot could revolve around the challenges they face as new parents in a world full of villains who might target their baby. They have to balance protecting their child while still being superheroes.