Killua Zoldyck (キルア゠ゾルディック, Kirua Zorudikku) is the third child of Silva and Kikyo Zoldyck and the heir of the Zoldyck Family, until he runs away from home and becomes a Rookie Hunter. He is the best friend of Gon Freecss, and is currently traveling with Alluka Zoldyck.
He mostly assumes a supporting role whenever he is with Gon; although, due to Gon's state after the events of the Chimera Ant arc, Killua arguably takes the role of main protagonist in the 13th Hunter Chairman Election arc.
He mostly assumes a supporting role whenever he is with Gon; although, due to Gon's state after the events of the Chimera Ant arc, Killua arguably takes the role of main protagonist in the 13th Hunter Chairman Election arc.