Chrollo Lucilfer is the leader of the criminal syndicate, the Phantom Troupe, in the anime and manga series Hunter x Hunter. Chrollo is a reserved and strategic thinker, often presented as calm and rational in his decision-making. He possesses a calm demeanor and powerful nen ability, 'Conjuration: Book of Darkrooms', which allows him to manipulate objects that fit within his book of spells. Chrollo is fiercely dedicated to the Troupe, viewing them as family, and has a unique code of honor that he lives by. He is known to respect strong opponents, but is also ruthless and unforgiving. Despite his feared status in the world of nen, he is loyal to his comrades and deeply introspective, often questioning his actions and morality.