A Mithra Black Mage affiliated to Windurst during the Crystal War, Lehko serves as a tactical adviser for the Tarutaru, Robel-Akbel and as such serves on the sidelines of battle. However he does venture onto the battlefield from time to time, particularly during the Siege of Windurst where he entered the battlefield astride a chocobo to save Romaa Mihgo when she was knocked unconscious during combat. He is also the father of Nanaa Mihgo.