<Li> Brandon Routh as Ray Palmer / Atom: A scientist, inventor, businessman and former CEO of Palmer Technologies who developed a power - suit that is now capable of size manipulation . The character was first introduced on Arrow . </Li> <Li> Arthur Darvill as Rip Hunter: A roguish time traveler and leader of the team, who hides the strains of being responsible for history itself behind a façade of charm and wit . His goal is to defeat Vandal Savage, his archenemy throughout time, in order to save the world and his family . Aiden Longworth portrays a young Rip Hunter . In the second season, Rip disappears and gives command of the Waverider to the Legends . He later returns, first as a film student in the 1960s who has no recollection of his past life, then as a brainwashed killer working for the Legion and later back to his original self . He remains with the team for a while but departs when he realizes that the Legends no longer need him as their captain . In the third season, he is the founder and leader of the Time Bureau . </Li> <Li> Caity Lotz as Sara Lance / White Canary: A Star City vigilante and former League of Assassins member suffering from rage issues after being resurrected by the mystical Lazarus Pit . In the second season, Sara becomes the leader of the Legends and captain of the Waverider . The character is partially based on the Black Canary and was first introduced on Arrow . </Li> <Li> Franz Drameh as Jefferson "Jax" Jackson / Firestorm: A former Central City high school athlete whose pro career was derailed by an injury and now works as an auto mechanic . He serves as the other half of the superhero Firestorm with Martin Stein . After Stein dies, Jax decides to leave the Waverider and return to the present as he is no longer a metahuman . The producers decided to create Jax as the other half of Firestorm to have him be someone in his early 20s and different from Ronnie's Firestorm, bringing comedy and camaraderie with Stein . The character was first introduced on The Flash . </Li>

Who plays sarah in dc legends of tomorrow