Jason Todd

Jason Todd was introduced shortly after Bruce and Dick's dispute, which ended in Dick being fired from his position as Robin. Jason had a natural, child-like charm to him, though was a troubled youth following his parents deaths. He tends to hold grudges, but usually is able to channel his rage and apply it to his crime-fighting ability. Bruce thought if he can assist Jason in keeping his cool, he would be a valuable and trustworthy sidekick.
Jason, like the rest of the Batman Family, has had his fair share of traumatic experiences, most notable being beaten to death with a crowbar by the Joker.
After the events of Infinite Crisis involving Superboy-Prime, Jason had awakened later in his grave and clawed his way out of the coffin. He has lost his memory, and ends up collapsing soon after his escape. After being in a coma for a year, Talia al Ghul arrives on the scene, taking interest in Jason. She convinces him that she would restore his memory, and takes him to where her father was, the Lazarus Pit. A few moments later, Jason emerged with knowledge of his past, and with advice from Talia, Jason embarks on a worldwide quest to train. His goals were to confront Batman about not avenging his death and killing Joker, as well as take matters into his own hands as a vigilante. He manages to track down and question Batman, who is shocked at Jason's return from the dead, but reminds Jason that he does not kill.

Jason is angered by Batman's 'weak' rule, and decides to take on the role of Red Hood.
The new Red Hood would soon get back to his goals, as he hunted down the Joker and beat him continuously with a crowbar (the same way that Joker beat Jason to death). Yet another surprising twist of events, however, Jason spared Joker's life, believing that through Joker, he could get his revenge on Batman.

Jason soon sets up a gang of his own, but not as those who are part of a crime syndicate, but to bring down Black Mask's operations as well as complete Jason's vengeful goals. He manages to bust several underworld gang leads, but also encounters the Batman Family in the process. Because of Jason's reckless attitude, those taught by the Dark Knight cannot allow him to continue his dirty tactics and try to bring him into police custody, but Jason always gives them the slip. Red Hood begins playing mind games with Batman and his vigilante group, such as placing his Robin mask in the passenger seat of the Batmobile, and making his presence known to the old and new Robin. At this point, after some investigation with Jason's coffin, Bruce is convinced that Jason never really died, unable to explain how the boy who died in his arms came back.
Going back to his original goals, Jason gets his hands on Joker and heads to a place that Batman knows all too well: Crime Alley. Red Hood demands answers upon Batman's arrival, such as why he didn't kill the Joker for taking Jason away from him. Batman responds by telling Jason that he would never cross that line, no matter how tough the circumstances are. Jason asks him to do it, if not for him, for all the evil things Joker has done, believing that the psychopath deserves what's coming to him. Batman refuses to, though admitting that he has thought about taking the Joker somewhere quiet and torturing him to death, he cannot allow himself to go down that path.

Jason, hoping to see just how far Bruce will go with his rules, tells him that he has an option on who's life to take, Jason's or Joker's. Jason holds Joker at gunpoint and stands behind the madman, then tosses his other gun to Batman, informing him that after he counts to three, he will pull the trigger. Batman instead throws a batarang, hitting Jason's neck. This gives Joker the chance to break free, and he sets off explosives whilst jumping into the river nearby. Red Hood and Batman follow him into the ocean, and the three men separate.
Jason tries to make up for his sins along with the Outlaws, a team of rebel heroes, including Arsenal and Starfire. The red symbol on his chest now changes to form a bat, representing his uneasy reconciliation with Batman's family.

Although he retains his aggressive fighting style, it is clear in the first issue of "Red Hood and the Outlaws" that he has not stopped using lethal force against his adversaries. In that broadcast, Jason used his firearms in an act of self-defense when killing three members of a criminal gang.

Jason is the second tallest member of the Bat-Family, after Batman.
He has a large and muscular build. His hair is black with a small white streak on his forehead. His eyes are bluish green, a possible consequence of his submersion in the Lazarus well.
Red Hood's suit is made of an armored material. He carries several types of weapons and wears a red helmet that allows him to protect his identity.