Preferring to forego her past and given name, Jo is a Shetona from Tural who crossed the salt with a band of mamool ja mercenaries in the hopes of making a fortune. When their leader, Molaa Ja Ja, began terrorizing the tonberries of Wanderer's Palace, she would have been content to remain under his leadership, if it brought them wealth and fame as promised -- but a stray scholar, having taken to the Nymian arts, convinced her to turn tail, though she didn't escape her betrayal unscathed. Injured, freshly unemployed, and now with another mouth to feed, she turned to mercenary work, putting her skills as a viper to use in exchange for coin. It drew her to the Frost Moon Order, whose warm atmosphere invited her to thaw her frostier edges.