Zeno Zoldyck
Zeno Zoldyck (ゼノ ゾルディック, Zeno Zorudikku?) is Killua's grandfather and Silva's father. A witty old man, his advancing age has not dampened his quick thinking and speed in battle. Zeno wears alternating signs on his garb that say either "A Kill a Day" or "Never Retire." He appears to be on good terms with the Hunter Committee's Chairman Netero, who hired Zeno to assault Ming Jol-ik's palace in East Gorteau in order to catch the chimera ant king off guard. He noticeably hesitates in the battle when he realizes the king has come to care for the safety of a human prisoner. Zeno favors Killua more than his other grandchildren. Zeno Zoldyck is voiced by Tadashi Miyazawa.
Read more about this topic: List Of Hunter X Hunter Characters, Zoldyck Family