DC has made the Doom Patrol their home for strange heroes and weird stories. Throughout the six decades since the team were first introduced, they've partnered with a number of characters from across the DCU. Having been first united and created by Niles Caulder, also known as "the Chief," the team have since been left without a mainstay leader. Although members of the team have taken up that role, looking outside could bring in someone better suited for the role.
Source:https://www.cbr.com/doom-patrol-potential-superhero-leaders-ranked/