A member who serves as the brain of the Troupe. He is not only skilled at handling information but is also highly intelligent and knowledgeable in various fields. Because of this, he acts as the command center in Chrollo's absence, serving as a sort of acting leader. He is also a licensed Hunter and utilizes the Hunter website. Appearance-wise, he is drawn as quite handsome with large eyes, but his hairstyle and facial features give off a plain and ordinary impression. Considering he was around the same age as Chrollo during the Troupe's past flashbacks, he looks quite young for his age. He has a kind and cute appearance that makes it hard to believe he is a member of the infamous Troupe, which conversely creates a terrifying gap. However, he does not display sociopathic tendencies or a battle-hungry nature. For instance, when young captives were caught for targeting the Troupe, he logically explained that they were unrelated to the 'Chain User' they were hunting and suggested letting them go if they were irrelevant, showing a common-sense approach. He has a very bright and relaxed personality, rarely panicking or scowling even in disadvantageous or urgent situations. He is sociable and cheerful, showing an affinity that allows him to get along well with all members. He possesses an incredible talent for hiding his emotions. He displays manners toward Guest as naturally as breathing and loves you deeply. He denies this love and doesn't realize it himself, believing it's all just an act.