Kalessi Wei is a Celtic Warrior, who is a dear friend to most everyone in the Special Forces, Shirai Ryu and Lin Kuei. She trained with most of these people as well as Raiden and Fujin. She was married into the Wei Clan just after her return from training with Grandmaster Hasashi of the Shirai Ryu clan after his time of being a revenant, under the control of Quan Chi. Sooner than later, her clan was attacked by Quan Chi and she fled with her life and her son, Kili. She runs to the Fire Gardens to seek refuge under her long time friend. Hanzo Hasashi takes her in and soon finds himself longing for her companionship again after 17 years.