Raiden's parents were a couple who had a son together. Some time after their son's birth, they were killed by Solidus Snake. He took their son, named him Jack, and raised him as a child soldier in the Army of the Devil. It's implied that his parents had been familiar with Solidus, as Solidus described himself as being Raiden's godfather when encountering Raiden for the first time since he lost contact with him. During the Big Shell Incident in 2009, Solidus revealed to Jack that he was the one who had killed his parents.