It could be a matter of trust. Batman might keep some secrets from Robin that, when discovered, make Robin feel betrayed. For example, if Batman is working on a case that involves someone close to Robin but he doesn't tell Robin about it. Robin would then feel angry and might lash out, leading to a fight.
One reason could be a difference in their methods. Robin might think Batman is too strict or old - fashioned in his approach to crime - fighting, and wants to do things his own way more freely. Maybe Robin has been influenced by new ideas or allies in Young Justice that Batman doesn't approve of.
In most cases, Batman would win. He has more experience, better combat skills, and a greater knowledge of various fighting techniques. Robin is still young and learning, although he is very talented.
One main conflict could be their different approaches to justice. Robin might be more impulsive and want to take quicker action, while Batman is more methodical. Another could be Robin trying to prove himself as an equal rather than just a sidekick, which could lead to clashes. Maybe there are also differences in how they view the use of certain tactics or their relationships with other characters in the Young Justice universe.
One reason could be a difference in their approaches to justice. Batman is often more brooding and strict, while Nightwing might be more flexible. Maybe Nightwing wants to take a new direction in fighting crime that Batman doesn't approve of, leading to a conflict.
In my opinion, it's really hard to say who would win. Robin is young and agile, with a lot of new - style combat techniques. But Batman is experienced and has a vast array of gadgets and strategies. If the fight takes place in a more open area, Robin's agility might give him an edge in dodging Batman's attacks. However, Batman's wisdom and his ability to read his opponents could turn the tables. It really depends on the specific circumstances written in the fanfiction.
Another theme is the development of their relationship. Fanfictions usually explore how Robin and Batman's bond evolves over time, from Robin being a novice to becoming a more independent hero while still maintaining that connection with Batman. This can involve things like trust - building, communication, and learning from each other's mistakes. For example, in some fanfictions, Robin might initially be too eager to prove himself and Batman has to teach him patience. It's these types of character - driven relationship developments that are common in this type of fanfiction.
In fanfiction, Robin and Poison Ivy could have an adversarial relationship. Robin is a hero who stands for justice and protecting the innocent, while Poison Ivy is often a villain with her own environmentalist motives that sometimes cross into criminal behavior. Their interactions might be full of tense moments as Robin tries to stop her from causing chaos.
One interesting plotline could be Robin trying to prove himself to Batman in a more complex and dangerous mission within the fanfiction world. Maybe there's a new villain in Gotham that only Robin can stop, but Batman is hesitant to let him take the lead at first.
One reason could be mind control. Maybe an enemy has managed to gain control over Robin without the others knowing. Another possibility is that he has some hidden agenda related to his past. For example, if there are secrets from his training days that are now coming to light and making him act as a mole.
Well, the Joker is also quite popular in these fanfictions. He adds a lot of chaos and conflict, especially when his actions put Robin in danger and force Batman to make difficult decisions. Another popular character could be Batgirl. She can have interesting interactions with Robin and Batman, whether it's in a team - up situation or a more personal, emotional context.
Perhaps Batman feels betrayed by his fellow members. A secret could be revealed about one of them that makes Batman lose faith in the integrity of the group. He's all about trust and if that's broken, he'd be likely to walk away.