RC-1124 started life out in a pod with for other brothers. He was a Commando and advanced fighting machine for the Republic. In his early years he was raised by male Kaminoan Shuae Basi. During this time he learned the cooperation of a team, but they were children at the time and would quickly forget it. In early 29 BBY he and his brothers were handed over to Dearh Nue. For the first year of the life Nue continued teaching them cooperation but then finally the time came in the year 27 BBY for them to become ruthless like the Mandalorians they were.