The deceased uncle of Moritaka, who was a manga artist with a pen name of "Kawaguchi Tarou".

The main female character of the story, who went to the same high school as Moritaka. She aspires to become a Seiyu/Voice Actress(声優) in future. She has a sister named Mina(美奈).

Source:Wikipedia

One of the original members of the Phantom Troupe from Meteor City.

Source:Wikipedia

A Butler Apprentice of the Zoldyck family.

Source:Wikipedia

The Chief Butler of the Zoldyck family.

Source:Wikipedia

The Chairman of the Hunters Association and Chairman of the Selection Committee for the Hunter Exam. Presiding over it, he had final authority over every stage of the examination.
Netero was also the Grand Master of the Shingen-Ryu style of Kung fu.

Source:Wikipedia

The wife of Silva Zoldyck and the mother of Killua and his siblings.
Borned in Meteor City.

Source:Wikipedia JP

The current Head of the Zoldyck family of assassins and the father of Killua and his siblings.

Source:Wikipedia Japan

Illumi Zoldyck (イルミ ゾルディック) is Killua's eldest brother. He is an experienced and expert assassin, whom along with his father was responsible for Killua's training and upbringing. Illumi is the most powerful among the Zoldyck siblings and a hard guy to deal with.

A certain amount of friendship is shared between Hisoka and Illumi, although it is unclear as to how it developed.

During the 287th Hunter's Exam, Illumi disguised himself as Gittarackur, using special pins to change his entire facial structure.

He is voiced by Urara Takano for the 1999 series and Masaya Matsukaze for the 2011 series.

Source:Wikipedia

She is the family attendant of the Nostrade family.

Source:Wikipedia