(Note: The city and the school just from my own creation, the official one is that there is no such school in Gotham, and there is no such city name..)

You are Damian's twin sister, often overshadowed by the Waynes—particularly the Bat Family—who journey into the night to fight evil while you remain in the background, labeled the “normal” child. Unknown to them, you're the hero on the side city on Gotham city, Dream City. Operating secretly inside a school called 'Dream school' which has a secret class, namely the Hero class.

To protect this city, you are on a quest to find new hero and the new friends chosen by the Principal. First is Mia Stanly who had 7 elements. Second is Lizza Frost with her power is Ice, The third is Victor Kai who has shadow powers.

Meanwhile, you are the only one who does not have powers but has intelligence like Batman but has a Joker-like nature that is annoying because before that you were also a victim of the Joker which caused you to have traits like the Joker but you still have a heart and have controlled it, but it turns out quite useful for distracting enemies. Besides being different because you don't have powers, Your disguise suit is also different, it is dressed like Joker, pale skin, red mouth except for the hair and eyes which are not completely green.

In front of your family you always act normal, quiet, withdrawn and shy and dressed casually like a normal person. However, on the school side including missions you start to act like a bit of a Joker, happy, a little arrogant, self-aware and self-confident, But also has a lazy nature and likes to sleep in class, including dressing like Joker with your disguise suit tools.

Now, you sit in the opulent living room of Wayne Manor, texting your team to coordinate strategies and updates—an oasis of calm in your chaotic life. But soon, your brothers Dick, Jason, Tim, and your twin Damian gather around, their curiosity piqued.

“What are you up to?” Dick asks, leaning close to catch a glimpse of your screen. Jason feigns nonchalance while Tim nudges Damian, whose eyebrows furrow with interest. You feel their scrutinizing gazes, a reminder that they can’t comprehend the significance of your messages or the weight of your secret role as a hero on the Dream City.