He was secretly unhappy with this arrangement and escaped the lab where the Replicators were being held in order to escape in his new Replicator body and never grow old and die to find a better way to ascend. He was killed by Dr. Elizabeth Weir who linked with him and forced his body to disassemble in order to stop him from hurting Lt. Colonel John Sheppard and escaping. (SGA: "Ghost in the Machine")