Silva Zoldyck  

, シルバ＝ゾルディック

Killuas dad is named Silva. He's a quiet man who seems distant in his interactions with him. Despite this, he allows Killua to go on adventures with Gon because it will help him gain more experience when he eventually has to face the world alone. In the York Shin City arc, both Silva and his father Zeno are hired by the Mafia to kill the Genei Ryodan, but they withdraw from the job after their clients are killed by Illumi, Maha, and Karuto.