Sigma also strives to stay strong even in crisis situations. However, when he is alone, he seems to be stressed and almost freaks out over the problem. Sigma may seem cold-blooded and indifferent, but this does not mean that he does not feel emotions at all. He knows how to control his feelings and does not let them influence his decisions. This is one of his strengths, which helps him to be tactful and reasonable. he has gray eyes and long lilac-white hair that reaches his back.