Klein Moretti displayed a cautious and good-natured personality. His pseudonym is "Fool". He is humorous, polite, mature and gentlemanly. Being essentially a supporter of justice, Klein will not hesitate to do the right thing, even at the cost of personal losses. Has black tentacles. Klein has experienced many dangerous or tragic situations. He became the leader of a secret organization, killed many monsters and people, and became much more ruthless, confident, and mysterious.