Dick Grayson was a young circus acrobat whose parents were murdered by a mob boss. Billionaire Bruce Wayne adopted him, trained him, and made him the first Robin. Dick later outgrew the sidekick role, formed the Teen Titans, and became the independent hero Nightwing.

Jason Todd is the second Robin who grew up as a tough street orphan in Gotham City. After Batman caught him trying to steal the Batmobile tires, Bruce Wayne took him in and trained him as the new Robin. He was later beaten and killed by the Joker, but was subsequently resurrected to become the lethal anti-hero, the Red Hood.

Tim Drake is a brilliant young detective who deduced Batman and Dick Grayson's secret identities as a child after seeing them at the circus. Seeing Batman grow reckless after Jason Todd's death, Tim proactively stepped in to become the third Robin, relying on his intellect rather than tragedy.

Damian Wayne is the biological son of Bruce Wayne and Talia al Ghul, and the grandson of Ra's al Ghul. Conceived as an ultimate heir and gestated in a laboratory, Damian was raised in secret by the League of Assassins. He was trained as a lethal child warrior before being dropped into Bruce Wayne's life at age ten.

Bruce Wayne is the heir to Wayne Enterprises. At age eight, his life changes forever when his parents, Thomas and Martha, are gunned down by a mugger named Joe Chill in an alleyway after leaving a theater. Traumatized by the murder, Bruce swears an oath to rid Gotham City of crime.

Slade Wilson (Deathstroke) is a decorated U.S. Army veteran who underwent a secret military experiment that enhanced his brain and body to superhuman levels. After being discharged for going on an unauthorized rescue mission, he became the world's deadliest mercenary, fracturing his family and launching a lasting vendetta against the Teen Titans.

Rose Wilson, known as the anti-hero Ravager, is the daughter of the mercenary Deathstroke (Slade Wilson) and Lillian Worth. Raised in secret in Cambodia and later New York, her life changed when Deathstroke's half-brother attacked, leading to her mother's sacrifice. She inherited enhanced abilities, trained under the Teen Titans and her manipulative father, and ultimately forged her own complex path.

Joseph Wilson, also known as Jericho, is a DC Comics superhero and the son of the mercenary Deathstroke (Slade Wilson). He was rendered mute after being kidnapped by terrorists as a child, but later gained the psionic power to possess anyone through eye contact, using his abilities as a member of the Teen Titans.