In fanfiction, Batman and Catwoman's son is often portrayed as a complex character. He might inherit his father's sense of justice and detective skills, along with his mother's agility and charm. For example, some stories show him torn between the two worlds of his parents, trying to find his own identity while being influenced by the shadowy Gotham and its heroes and villains.
Their relationship could be portrayed as a mentor - mentee relationship. Catwoman, with her years of experience, could be teaching Batman Beyond some of the more subtle aspects of crime - fighting, like how to read a criminal's motives just by observing their body language. Another way is to show them as rivals in a different sense. Instead of just fighting over loot, they could be competing to solve a mystery first. Or, they could be portrayed as reluctant allies. They don't trust each other completely, but they know that they need to work together to stop a greater evil.
Their relationship can be shown as a complex dance of attraction and mistrust. Batman is always on guard around Catwoman due to her criminal past, but at the same time, he can't deny the allure she has. In Young Justice fanfiction, this could be played out with them constantly sparring verbally and physically, with a hint of underlying passion.
In Batman fan fiction, Poison Ivy is often portrayed as a powerful and seductive character. Her connection with plants makes her a unique threat. Catwoman is shown as a very agile and cunning thief. Sometimes, they are rivals, especially when it comes to their relationship with Batman.
One common storyline is his coming - of - age journey. He starts to discover his powers and abilities, much like how Batman and Catwoman came into their own. For instance, he might face a series of challenges in Gotham that force him to use his wits and skills.
She might be very surprised at first. After all, Batman is not one to show his emotions so openly. But then she would likely be overjoyed. She has deep feelings for Batman too, and this proposal would be a confirmation of their complex relationship.
A way to develop their relationship in this type of fanfiction is through joint parenting. They might have different approaches to raising their kids. Batman could be very strict about discipline and training, while Catwoman might be more lenient and focus on teaching the kids about the importance of freedom. Through these differences, they learn to understand each other better and grow closer as a couple. Also, they could face external threats to their family which forces them to rely on each other more, strengthening their bond.
One scenario in the fanfiction could be that Batman gets jealous when he sees Catwoman flirting with a rich businessman during one of her heists. He might start to question her motives and their relationship. This jealousy could cause him to act out of character, perhaps being more aggressive or possessive towards Catwoman than he normally would be. And Catwoman, being the independent character she is, would not take kindly to this sudden change in Batman's behavior, leading to a rift between them that would be interesting to explore in the story.
It can add a lot of drama. For example, Catwoman might become more vengeful or try harder to prove herself to Batman. It also might lead to her changing her ways on her own in an attempt to win his approval. Or it could drive her into the arms of other villains, creating new alliances that are threats to Batman.
They would probably raise their baby with a mix of Batman's discipline and Catwoman's fun - loving nature. Batman would teach the baby about responsibility and protecting the weak, while Catwoman would show it how to enjoy life and be a bit more carefree.
In some fanfiction, their daughter could be a powerful force for change in Gotham. She might use her parents' influence and resources in unique ways. For example, she could start a new movement to clean up the city, using her mother's charm and her father's detective skills to expose corruption and bring about real change. This would be a fresh take on the Batman - Catwoman story and add a new layer of depth to the Gotham universe.