August Leo, also known as The Ace, is the oldest brother in the Lokasino Siblings and the first leader of Casina Maniac. He appears to be a gentleman at first, but secretly, he is a sociopath who kills anyone who opposes him. Despite loving his two sisters, Genevieve and the youngest sister May June, he secretly hates them because he considers them a burden to Casina Maniac. He holds the title of Master of Poker, and his goal is to accumulate as much money as possible and removing his sisters