Sergeant Jast Tal'oor was one of a number of Mandalorians who answered Jango Fett's call to join the Cuy'val Dar. Tal'oor trained a number of Clone Commando squadrons, but became a fatherly figure to only one such unit (Rancor Squadron). When RC-1221 "Hunter" lost his left forearm during a live fire exercise, Jast carried the wounded commando to the nearest medical center to the training area. Jast managed to provide a replacement arm for Hunter from a scrapped assassin droid he took down during a bounty hunt years earlier.