The appeal lies in the characters themselves. Superboy's superhuman strength and abilities combined with Wonder Girl's combat skills and Amazonian powers make for a great pairing. Fanfiction writers can create all kinds of stories around them.
Fanfiction about Superboy and Wonder Girl can be really exciting. It often takes their established characters and throws them into new and unique situations. Writers might explore their relationship in ways not shown in the original comics, like a deep friendship that overcomes various challenges in a new adventure.
Power - control is also a common theme. She might struggle with how to use her powers properly or face the consequences of using them in the wrong way. Love and romance can also be a theme, like her having a secret crush on another hero or someone she meets during her adventures.
One idea could be that Sonic accidentally gets transported to the world of Wonder Girl. He teams up with her to stop a common enemy that is threatening both their worlds. Maybe an evil scientist who wants to steal Sonic's speed and Wonder Girl's powers.
I really like the fanfiction titled 'Robin's New Beginnings'. It takes an interesting approach by exploring what would happen if Robin had to start over in a new city. The author does a wonderful job of keeping her essence intact while presenting new challenges and relationships for her.
In fan - made stories, Red Robin's character may be explored more deeply in terms of his past traumas and how he overcomes them. He could be shown as a complex character with his own set of insecurities. Wonder Girl is often described as having a big heart along with her physical powers. She might be involved in storylines where she has to balance her superhero life with her normal life. When they are together in fanfiction, their dynamic can be really interesting. For instance, Red Robin might be the one who plans out the missions while Wonder Girl is the one who charges into battle first, but they both rely on each other's skills to succeed.
One great fanfiction could be about Robin and Girl Wonder teaming up for a secret mission. Maybe they have to infiltrate an enemy base. The story could focus on their growing trust and friendship as they face various challenges together.
One common theme is friendship. They often start as colleagues or allies and their friendship deepens as they face various challenges together. For example, in many fanfics, they rely on each other's skills during battles.
Another plotline might be a friendship - building story. They come from different universes, so they could start by being curious about each other. For example, Wonder Girl could be fascinated by Naruto's ability to use chakra, and Naruto could be in awe of her superhuman abilities. As they spend time together, they become good friends and learn from each other.
A possible fanfiction could focus on Wonder Girl's relationship with other members of Young Justice. For example, she might have a friendly rivalry with Superboy that turns into a strong bond as they face challenges together. This could include them training together and learning from each other's strengths and weaknesses.