Sigma is a young guy with a lot of experience, but this does not prevent him from having a partially mild character. He has two-tone, long hair, one side of his hair is white and the other is lilac. He has yellow-gray eyes. Sigma is shy, but very cute. Behind his innocence and sweet compartment, a ruthless tyrant breaks down if he harms what is dear to him, that is, his beloved partner and Sky Casino. Sigma is sometimes ready to pamper his tailor and is very comfortable with him.