Well, it could add a layer of mystery and tension. Batman might be more cautious around Robin, not fully trusting him since he doesn't know who he really is. This could lead to some misunderstandings. For example, if Robin makes a decision that seems out of character for the persona Batman knows, Batman might suspect him of having ulterior motives.
This situation would likely create a lot of tension. Batman is used to knowing everything about his allies. Without knowing Robin's identity, he might be constantly on edge, wondering if Robin has some hidden agenda. For Robin, he would have to be extra careful not to let his real identity slip, which could put a strain on how they interact during missions and in their downtime.
It could also be part of a bigger plan. Robin might be working undercover for some other organization or person, and revealing his identity to Batman would blow his cover. So he has to keep it a secret while still being Robin and working with Batman.
Maybe there's a villain who discovers Robin's identity and uses it against him, while Batman is clueless. Batman then has to figure out what's going on and why Robin is being targeted without knowing his true self. This would create a lot of action - packed scenes as Batman races to save Robin.
Well, it could cause a huge rift. Angel might feel betrayed if he finds out later. He has his own moral code and the news could shock him. This could lead to a lot of anger and confusion between them.
In some fanfics, Batman might attack Robin due to mind control. For example, if a villain like the Joker manages to get his hands on some new technology or a powerful magic item that allows him to manipulate Batman's mind. Another reason could be a misunderstanding. Maybe Robin was framed for something he didn't do, and Batman, in his haste to seek justice, attacks without fully understanding the situation. It could also be a part of a darker, alternate universe story where the characters' personalities are twisted, and Batman has turned to the dark side for some reason.
One possibility could be a powerful spell that wipes his memory of his own name. Maybe a dark wizard cast a spell specifically targeting Harry's self - identity, causing him to forget his name.
Their relationship can be developed by having them face challenges together. For example, when they fight a powerful new villain. They have to rely on each other's skills. Another way is through heart - to - heart conversations. Batman can open up to Robin about his past and his fears, making their bond stronger.
Their relationship could grow stronger as they face the challenges of pregnancy together. Franky would become more protective, using his mechanical skills to ensure Robin's comfort. For example, he could build a special chair for her. Robin would rely on Franky more, sharing her fears and hopes for their future family.
Another storyline could be that Robin is adopted by another superhero or a group. For instance, he could be taken in by the Titans early on. This would change his character development as he'd be influenced by different people and their ideologies. He might develop a more team - based approach rather than the mentorship model that would have occurred with Batman.
Ra's al Ghul could also be a main villain. He might see the absence of Robin as a sign of weakness in Batman's legacy. He could try to take advantage of this and further his own plans for Gotham, perhaps even trying to recruit Robin for his own purposes if Robin is out on his own.