Formation, Death and Return (1963-1988)
The Doom Patrol first appeared in 1963's MY GREATEST ADVENTURE #80. This title transitioned to an ongoing DOOM PATROL series after issue #86, which featured the misadventures of Robotman, Elasti-Girl, Negative Man, and The Chief as they faced off against such eccentric rogues as the Brotherhood of Evil, Madame Rouge, and General Immortus.
Gar Logan, a.k.a. Beast Boy, joined the team's ranks in DOOM PATROL #99, after the Doom Patrol rescued him from a conspiratorial plot by Gar's erstwhile guardians to use his transformative abilities for profit. Gar was eventually legally adopted by Elasti-Girl and her husband, Steve Dayton, a.k.a. Mento.
1968's DOOM PATROL #121, however, would prove to be the title's last issue. In it, the team was killed off in a plot by one of their recurring villains, Madame Rouge. With the population of a small town in Maine at risk, the Doom Patrol elected to sacrifice themselves rather than allow the innocent civilians to die, no matter how cruel those innocent civilians may have been to them in the past.
In 1977, the team was "resurrected" in SHOWCASE PRESENTS #94, which revealed that Robotman had, in fact, survived the explosion; and that a woman named Celsius, who claimed to be Niles Caulder's widow, was reforming the Doom Patrol to maintain Caulder's legacy. This new incarnation continued to grow and branch out, adding new members before it completely collapsed and was scattered during 1989's INVASION! event, during which Celsius was killed.
Crawling From the Wreckage -- and Beyond (1989-2011)
Out of the literal wreckage of INVASION!, a new Doom Patrol was born. In 1989's DOOM PATROL #19, the team returned to its former, albeit strange glory, and saw the return of The Chief, who recruited both Robotman and Negative Man once more to his cause.
This incarnation of the Doom Patrol introduced the team member Crazy Jane, a woman with 64 different personalities, each of which had a different super power, as well as Danny the Street, a sentient, transvestite street able to change its appearance and teleport to various cities. This era also saw the arrival of the Scissormen, a group of villains who existed outside of reality and Mister Nobody and his Brotherhood of Dada, a nihilistic reincarnation of the original Brotherhood of Evil.
Eventually, it was revealed that The Chief himself had caused the accidents that gave the original Doom Patrol their powers (in 1992's DOOM PATROL #57). This called the entire history of the team, as well as Caulder's motivations, into question. After he was exposed, Caulder was decapitated by an entity called Candlemaker, though he survived this attack, thanks to nanotechnology he had implanted in his body, as a disembodied head, kept alive on a tray of ice. Powerless, Caulder expressed regret over his manipulations, though his connection with the team would never be the same.
The team largely faded from prominence until the events of 2005's INFINITE CRISIS event saw it revived once more. Following The Chief's betrayal, Mento stepped in and took over as leader while Beast Boy temporarily returned to the roster alongside two of his Teen Titans teammates, Vox and Bumblebee, both of whom joined the team for the first time.
Following the events of 2016's DC UNIVERSE REBIRTH #1, a new Doom Patrol was born. Its roster included a new character, Casey Brinke, who discovered a surreal world in which some of the team's prior members still existed.
Casey was revealed to have been a comic book character imagined by Danny the Street, who now existed inside an ambulance that Casey drove. The duo were joined by Robotman and Negative Man, alongside newly created characters like Terry None, the daughter of Mister Nobody. This incarnation of the team did not adopt the codename Doom Patrol immediately and instead focused on freeing Danny from an evil corporation known as Vectra before turning its attention to large-scale heroics.