BL-17 was a BL-series Battle Legionnaire, created to serve the Confederacy of Independent Systems during the Clone Wars. One of the few Battle Legionnaires to survive the Mission to Norval II, which saw the Galactic Republic defeat the Confederate-allied Mandalorian Protectors, BL-17 later came into the possession of the bounty hunter Boba Fett sometime after the Declaration of a New Order in 19 BBY.