Jack's story first began when he was born after Aku had his imprisonment by the hands of Jack's father. About a decade later, Aku escaped by an eclipse. Jack's mother went into hiding and sent Jack to train around the world, as was planned by his parents should Aku ever escape his prison and Jack's father fail to stop him. After years of training with some of the greatest warriors of the time, Jack returned to the temple his mother was hiding in and was given the sword his father used to defeat Aku with and his signature kimono.
