Some common themes could be the exploration of relationships. Since it's a harem concept, there's often the theme of Superboy having multiple relationships with different 'Men' characters. Another theme might be the development of Superboy's character as he navigates these complex relationships. Also, there could be themes related to power dynamics within the harem, like how different characters' powers interact and influence the group dynamic.
Well, characters like Nightcrawler could be part of it. His acrobatic and teleporting abilities would add an interesting dynamic to the harem. Another could be Iceman. His cool (pun intended) powers and his somewhat reserved personality could create an interesting relationship with Superboy. And then there's Cyclops, with his leadership skills and powerful optic blasts. He could also be a likely candidate for the harem.
One popular 'X Men harem fanfiction' might be those that focus on the relationship between a new mutant character and multiple X - Men members like Wolverine, Cyclops, and Storm. For example, stories where the main character has unique powers and forms deep emotional and romantic connections with them.
Power dynamics is also a common theme. Spiderman has his own set of powers, and the X - Men each have their unique abilities. In these fanfictions, they often have to figure out how to work together, especially in a harem situation. For instance, they might face a villain who can nullify some of their powers, and they need to rely on each other's strengths. There are also themes of loyalty and friendship that develop as they face various challenges together.
Artemis might also be a part of it. She's a strong and independent character, and her dynamic with Superboy could add an interesting layer to the harem. Their interactions could range from friendly banter to more intense emotional moments.
You can start by looking on fanfiction websites like Archive of Our Own. Just type in 'X Men harem' in the search bar, and it'll show you a bunch of relevant stories. You can also check out forums dedicated to X - Men fanfiction, where fans might recommend some great harem - themed ones.
One common theme is friendship. They are both young heroes, so their bond as friends is often explored. For example, stories might show how they support each other during tough battles.
Often, there's the theme of adventure. They go on missions together and during these adventures, their bond deepens. There can also be themes related to acceptance, like accepting each other's flaws and differences. In some fanfictions, they might face opposition from their superhero teams or society in general for their relationship, which adds to the drama.
Friendship turning into love is a very common theme in 'superboy x reader' fanfiction. It usually starts with a chance encounter or them being thrown together in a certain situation. They start as friends, getting to know each other's quirks and personalities. As time passes, their feelings for each other grow deeper, and they have to navigate this new romantic aspect of their relationship while still dealing with the superhero world around them.
I'm not really into that specific type of fanfiction, but you could try searching on popular fanfiction websites like Archive of Our Own. They have a wide range of fanfics, and you might be able to find some superboy x robin ones there.