An assassin from the Mong Tribe, Gai was entrusted the role as being the representative of the Mong Tribe, competing in order to gain the honor of his tribe back. Gai is a confident, cool, and collected boy who often gets himself in trouble due to his infatuation with Miyo. Being the eldest son, he is shown to take great care of his brothers. He also has a strong sense of justice, choosing his friends' safety and well-being over the Materion, despite Charming Gold's threats