He appears to be kind to his customers at the Sky Casino, given the fact that he gave a customer another chance by saying that the game is invalid. He also appears to have a strong sense of ownership.In a conversation with Teruko Okura to close the casino, Sigma refuses and even asks her who will reimburse the revenue and reputation if the casino were to be closed and claims that the casino is his life and his customers are valuable to him.He acts confident and composed even at times of crisis.