The Joker's past and real name remain intentionally vague within the main continuity. He is Batman's greatest adversary and a symbol of chaos standing in opposition to Batman's order. His character is deliberately designed to be unpredictable, and various backstories have been presented for him across different tales. ENTP

Richard "Dick" Grayson was a member of the Flying Graysons acrobat family. After his parents were killed, Bruce Wayne took him in, and Dick became the first Robin. Later, he stepped out of Batman's shadow to become Nightwing and forged his own independent identity. ESFP

After the deaths of Thomas and Martha Wayne, Bruce dedicated his entire life to fighting crime and preventing such a tragedy from happening again. He spent years training in martial arts, investigative techniques, and various sciences, and at the age of 25, he began his active career as Batman. INTJ

Bruce found Jason on the streets of Gotham and turned him into the second Robin. Jason was later killed by the Joker; after his return, he developed a complex relationship with Batman and became the Red Hood. ESTP

She was a psychiatrist who worked with the Joker at Arkham. Her relationship with him led her to adopt the persona of Harley Quinn and enter the world of crime. Later, she distanced herself from the Joker and became an independent character, appearing at times as a hero and at others as an anti-hero. ENFP

Approx. 35–40+ ISTP Catwoman Selina Kyle is a professional thief and Gotham's renowned cat burglar. Her morality is not strictly black or white; depending on the situation, she sometimes acts as a hero. She shares a long and complex relationship with Bruce Wayne/Batman.

He is the biological son of Bruce Wayne and Talia al Ghul and was raised within the League of Assassins. Trained in combat and assassination from childhood, he was incredibly arrogant and violent when he first entered Bruce's life. Later, he strove to learn Batman's principles and became Robin. ENTJ

Pamela Isley was a scientist and botanist who transformed into Poison Ivy following experiments and incidents involving biological agents. She gained the ability to control plants and developed a resistance to toxins; her primary goal is the extreme protection of nature against humanity. At times, a much more empathetic side of her character has been portrayed. INFJ

Approximately 30–33 years old ENTJ Batgirl / Oracle She is the daughter of Commissioner James Gordon. She designed her own Batgirl costume and fought crime without her father's knowledge. Later, she became "Oracle" and served as an information and communication support system for many DC heroes through hacking and intelligence gathering. DC +1

Tim had been fascinated by Batman since childhood and discovered the identities of both Batman and Dick using his own powers of deduction and detective skills. Following Jason's death, he believed that Batman would suffer a psychological and moral decline without a Robin, so he stepped into the role himself. Within the Bat-Family, he is best known as the analytical mind and the detective. INTP