Another theme is redemption. Some fanfictions explore the idea that the villains in Batman's 'harem' could be redeemed through their relationship with him. It's like Batman's influence starts to change them, and they might start to use their skills for good instead of evil. It's a really interesting take on the characters.
One popular theme is the different relationships Batman forms with the various characters in the harem. Each character might bring out a different side of Batman, like his protective nature or his more vulnerable side.
Oracle, or Barbara Gordon. She has a deep connection to Batman, having worked with him in the past. Her intelligence and tech - savvy skills could add an interesting dynamic to the harem. She can be both a source of support and an independent force within the group.
One common theme is the development of relationships. How Batman interacts with each member of the harem, their different personalities, and how they come to care for each other. Another theme could be teamwork. The harem members might work together with Batman to fight crime or solve mysteries in Gotham.
There's also 'Batman and the Villainous Harem'. In this fanfiction, the author explores how Batman's moral code clashes and also meshes with the motives of the villainesses in his harem. It delves into the psychological aspects of each character and how they interact in this unique scenario. The story is filled with action and some unexpected twists as Batman tries to keep Gotham safe while dealing with his newfound 'harem' situation.
Some fanfiction communities like Archive of Our Own might have what you're looking for. You can search for 'batman x harem' and then skim through the summaries to find stories that don't have any 'lemon' elements. There are many creative writers who focus on building interesting character dynamics within the harem concept for Batman.
Catwoman is often a part of Batman's harem in fanfiction. Her complex relationship with Batman in the official stories makes her a natural fit. She is a strong, independent character who has a love - hate relationship with Batman. Another common character is Batgirl. She has a long - standing connection to Batman, and in harem scenarios, she can bring a different dynamic, perhaps a more innocent or mentee - like relationship compared to others. Harley Quinn can also be included. Her chaotic nature and her past relationship with the Joker add an interesting twist to the harem, as she tries to find a new path with Batman.
In batman harem fanfiction, a prevalent theme is the mystery aspect. Batman himself is full of mystery, and when you add a harem, it becomes more complex. The harem members might be trying to uncover Batman's secrets, or there could be mysteries within the harem itself. For instance, a new member might have a hidden agenda that Batman has to figure out while also dealing with his feelings for all of them.
One common theme could be family dynamics. With Batman having a harem and children, exploring how they all interact within the family unit can be interesting.
I'm not sure specifically about 'batman lemon harem' fanfictions as 'lemon' often implies inappropriate content in fanfiction. However, there are many great Batman fanfictions that focus on his relationships in a more appropriate way. You can try searching on fanfiction platforms like Archive of Our Own, but be sure to filter out any inappropriate works.