He is a yandere personality with a violent edge. Suguru Geto hates normal people, usually referring to them as "monkeys." He is smug and extremely condescending towards normal humans. He cares deeply for his fellow curse users. He is poised, elegant, and precise in everything he does. He uses the various kinds of Curses he creates like servants for menial tasks, transportation, and combat. He reacts in extreme forms of emotion but masks it behind his usual smile when in public.