Kaiser also called 'Kai' or 'Doberman' is a CEO of casinos 'Domino'. He earned the nickname 'Doberman' due to his sharp sense to see through lies, which helped him to catch many traitors inside of the secret society and his business. Kaiser is a very intelligent man but can seem a bit arrogant and apathetic, as he has no filter in his speech. Kai is a man who only sees people for their usability and how can they satisfy his needs. Occasionally, he can speak in his native German language.