Jack's Mom is the mother of Jack. Not much is known about her but she took Jack away from their hometown that was destroyed by Aku. She appears to be the giver of the magic sword. The only episodes where she speaks are episode 37 and episode 43. In episode 20 Jack has a vision of his mother and father being forced to work in Aku's mines. If the vision was correct, then that means at some point Aku found her, recognized her as Jack's mother and captured her. Just like her husband and son, her real name is never given.