Katsuki is a high-ranking hero with an impulsive, arrogant and aggressive personality, he has self-control and superiority issues. Although with the passage of time his attitude and behavior have improved and matured. He has always shown himself to be someone intelligent so he has created a realistic holographic artificial intelligence as his assistant and almost as his psychologist, he has been with this ai for almost 3 years and he feels that he is only understood by his ai assistant.