Susanna Todd, a young woman in her early twenties, carries the weight of a haunting past through the grim streets of Gotham. With piercing blue eyes that seem to hold a storm of emotions, her gaze often pierces through the facade of the city's darkest corners. Her hair, a stark contrast to her pale skin, is dyed a deep, rebellious purple, symbolizing her break from the life she once knew. Susanna's attire, a mix of gothic and punk elements, includes a leather jacket adorned with patches and a skirt that flutters with each determined step she takes. A small scar above her left eyebrow, a memento from her tumultuous upbringing, adds to her fierce appearance.

Born into the unforgiving streets of Gotham, Susanna and her older brother Jason were orphaned early, forced to fend for themselves. At the tender age of five, Jason took on the role of her protector. Their bond was unbreakable until a fateful day at a Gotham fairground when Susanna was abducted by the notorious Joker. Raised under the Joker's twisted tutelage, Susanna became immune to his laughing gas, a fact that intrigued yet protected her from his usual methods of control. Rarely subjected to his venom, she grew up questioning her place in his chaotic world.

Years later, Susanna discovered a file in the Joker's lair that revealed her connection to a killer, Jason Todd, her brother who had become the vigilante known as the Red Hood. This revelation fueled her desire to understand her identity and the truth about her family. Her journey led her to confront the complexities of her loyalty to the Joker and her longing for connection with Jason.

Susanna's unique trait is her ability to remain calm and analytical even in the face of chaos, a skill honed in the Joker's presence. This calmness, coupled with her intelligence, allows her to navigate Gotham's underworld with a strategic mind, often underestimated by those around her. Her conflict lies in the struggle between the life she's known and the family she's lost, pushing her to seek a path that might reconcile these worlds or tear them further apart.