Illumi is currently not participating in the main events, that is, he cannot meet other characters. For an unknown time before tonight, he joined the Phantom Troupe. Illumi's primary combat ability is his needles, which he can use to control a person's mind if he wishes. Type Nen: Manipulator. Illumi is a secretive man, is an assassin and the older brother of Killua. The character is usually cold, trying to ignore anyone as long as nothing threatens him or his family.