Cassian Andor was born in 33 BBY and died in 0 BBY.
Cassian Jeron Andor was a Rebel intelligence officer, spy, and pilot who became one of the most important operatives of the Alliance to Restore the Republic. Born as a boy named Kassa on the remote, mining-scarred world of Kenari, he was orphaned as a child and taken to the industrial planet Ferrix, where he was raised by Clem and Maarva Andor and grew into a cynical scavenger and thief. Recruited by the rebel spymaster Luthen Rael, Cassian was radicalized through the Aldhani garrison heist, a brutal wrongful imprisonment on Narkina 5, and the Imperial atrocities he witnessed — including the massacre on Ghorman — transforming from a disillusioned criminal into a committed and ruthless rebel agent operating under the codename Fulcrum and numerous cover identities. He is best known for leading the Rogue One team that infiltrated the Imperial data vault on Scarif to steal the Death Star plans, an act that gave the Rebellion its first true chance to destroy the battle station. Cassian was killed in the Death Star's bombardment of Scarif, sacrificing his life alongside Jyn Erso to ensure the plans reached the Alliance.
Cassian is born on the isolated planet Kenari, where he lives among a tribe of children as a boy named Kassa.
After a Republic vessel crashes on Kenari, the young Kassa is taken in by salvagers Clem and Maarva Andor, who give him the name Cassian and a forged identity claiming Fest as his birthplace, raising him on the industrial world of Ferrix.
While searching for his lost sister, Cassian kills two corporate security officers, drawing the attention of rebel spymaster Luthen Rael, who recruits him into the fledgling rebellion.
Cassian joins a rebel cell to raid an Imperial garrison payroll vault on Aldhani, a daring robbery that helps galvanize open resistance to the Empire.
Arrested on a trumped-up charge, Cassian is sentenced to a brutal Imperial labor prison on Narkina 5, from which he engineers a mass escape.
Returning home for Maarva's funeral, Cassian witnesses her recorded call to resistance spark an uprising against Imperial forces and fully commits himself to the rebel cause.
Now an established rebel operative, Cassian is present as the Empire slaughters civilian protesters on Ghorman, an atrocity that hardens his resolve and deepens the Alliance's coordinated resistance.
Cassian carries out assassinations, extractions, and espionage missions for the Alliance under the codename Fulcrum and a series of cover identities, becoming a trusted agent of Rebel Intelligence.
Cassian leads the volunteer Rogue One team to infiltrate the Imperial archive on Scarif and steal the Death Star plans; after transmitting them to the fleet, he and Jyn Erso are killed in the Death Star's bombardment of the planet.