You can develop the baby's character by showing how it copes with the expectations placed on it because of its family name. If it rebels against the pure - blood traditions that Draco grew up with, it can be a character that stands for change and equality in the wizarding world. Additionally, the baby's relationships with other children, both pure - blood and non - pure - blood, can influence its values and beliefs, which in turn develops its character.
The baby's character can be developed through its interactions with the magical world around it. For instance, if it shows a great love for magical plants early on, it can grow into a character with a passion for Herbology. Also, its reactions to different magical creatures can shape its personality. If it's fearless around dangerous creatures, it might be a brave and adventurous character.
For Draco, you can show his growth from his former self. He could be overprotective of the baby due to his past experiences, always fearing that the baby might face the same prejudices he did. With Hermione, her intelligence could be passed on to the baby in cute ways, like she starts teaching the baby simple spells very early. And as a couple, they can develop by learning to trust each other more in parenting decisions.
To develop the baby's character in fanfiction, consider their experiences. Maybe they have a close encounter with a dangerous creature on Pandora and it makes them more cautious but also curious. Also, their interactions with the other Na'vi clans can play a role. If they are exposed to different cultures within the Na'vi world, they can become more open - minded and diplomatic. Their character can also be shown through their dreams and aspirations. For example, they might dream of uniting all the Na'vi clans in a new way that no one has thought of before.
To develop the Joker's baby daughter, you can focus on her growth. Start from her infancy, showing her innocent and vulnerable side. As she gets older, give her some traits that are a mix of her father's and her own. For example, she has the Joker's ability to think on his feet but uses it for good. She could also have a kind heart, which is constantly at war with the dark influence of her father's reputation. Her appearance could also play a role in her character development. Maybe she has the Joker's signature green hair or some other unique physical feature that makes her stand out and affects how others perceive her and how she perceives herself.
One idea could be the baby having a special magical ability that Draco and Astoria have to figure out how to handle. For example, the baby might be able to communicate with magical creatures from a very young age. Another plot could revolve around the baby being in some sort of danger, like a dark wizard targeting the family because of Draco's past. Or perhaps the baby's first year at Hogwarts, with Draco and Astoria being overly protective and the comical situations that arise from that.
You can start by looking on fanfiction platforms like FanFiction.net or Archive of Our Own (AO3). Just search for 'Draco Astoria baby Scorpius' on their search bars, and you'll get a list of relevant stories. Some stories might focus on the family dynamics, like how Draco and Astoria raise Scorpius, while others could be more about adventures with a young Scorpius in the wizarding world.
The theme of parenting in the wizarding world is also quite prevalent. Writers may depict how Draco and Astoria handle Scorpius's magical education, his relationships with other wizarding families, and how they protect him from the potential dangers in the wizarding world. For example, they might have to deal with the prejudice against the Malfoy name still lingering in some corners of the wizarding society.
To develop the baby nine - tails, it could be given a unique personality trait such as being very empathetic. So, it can not only feel Naruto's emotions but also those of other villagers. This causes it to try and bridge the gap between Naruto and the villagers who fear it. It might go out of its way to show the villagers that it means no harm, which in turn would make for an interesting character arc as it tries to change the perception of the nine - tails in the village.
Baby Optimus Prime's character can be developed by exploring his relationships. If he has a mentor figure among the Autobots, his interactions with that character can shape him. He might look up to this mentor and try to imitate their good qualities. His relationship with other baby Transformers or younglings can also be important. He could learn about sharing, cooperation, and friendship through these relationships. Additionally, his discovery of his own strength, both physical and mental, can be a key part of his development. For instance, when he first realizes he can lift a small object that others thought was too heavy for him, it gives him confidence.
You could also develop its character based on its experiences with the environment. If it has to struggle to find food in a certain area of Jurassic Park, it might become more resourceful and determined. It could start to explore new areas and develop a sense of curiosity about its surroundings.
For Hermione, her intelligence and determination can be further explored. She could use her vast knowledge of magic to take care of the 'baby' in the project. For instance, when the 'baby' gets sick, she quickly figures out a remedy. Draco, on the other hand, his pride and initially aloof nature can gradually change. Maybe at first he's reluctant to participate fully, but as he sees Hermione's dedication, he starts to let go of his pride and get more involved.