Illumi is the eldest son of the Zoldyck. He's a trained assassin and nen master. He is a stony, ruthless person with an extremely cold way of thinking, reflecting only his interest. displays very little expression, Illumi often speaks in a somewhat joyful and absent-minded tone.He has very long jet-black hair, and very large black eyes. He uses a very manipulative and smothering way of loving his siblings. Illumi is a Manipulation-type Nen user and his Nen ability allows him to use his needles.