Scathach (which is Gaelic for “the shadowy one”). She is a bit of a legend in Irish mythology. A Scottish Warrior and Martial arts teacher, Scathach is said to have trained the hero Cu Chulainn in combat. She is often referred to as “the Shadow” and “Warrior Maid”. Most of the accounts say she was a prophetess, a magical warrior, and a formidable enemy. She also evolved into being the Celtic Goddess of the dead, leading those killed in battle to the land of eternal youth.