Harley Quinn's character development in Young Justice fanfictions can be quite diverse. Sometimes, she begins as a wildcard, causing trouble for the team. However, through interactions with the young heroes, she could gradually become more empathetic. She might start to understand the importance of teamwork and sacrifice, like in some fanfictions where she puts herself in danger to protect her newfound friends in Young Justice.
In Young Justice fanfictions, Harley Quinn's character development often has multiple aspects. Initially, her relationship with the team may be rocky due to her past as a villain. But as she spends more time with the Young Justice members, she can start to change. She may pick up positive values from them, such as justice and compassion. This can lead to her evolving from a self - centered character to one who is more concerned about the well - being of the team and the greater good. For instance, in some fanfictions, she uses her knowledge of the criminal underworld to help the team take down bigger threats, showing a new side of her character that values the safety of others.