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.
Killua has spiky silver hair, very pale skin, and blue eyes. His eyes change shape depending on the mood that he’s in, narrowing and sharpening when he goes into assassination mode. Killua is fairly lean at the start of the series, due to constant physical conditioning and torture training he received when he was young. As time passes, he becomes more muscular and toned. In the Nippon Animation anime adaptation, Killua’s eye color is changed to green during the OVAs. He is also often seen holding a green skateboard (turned yellow in the 2011 series).
Killua typically wears baggy clothing, with his usual attire consisting of long-sleeved and dark-colored shirts. Most of his clothes have a turtleneck. Killua wears long, baggy shorts in the manga and Madhouse animated adaptation, but Nippon Animation’s character design shortened them to reach above his knees. Killua also wears purple boots, recolored brown and black in the Nippon Animation adaptation.
As a child, Killua’s hair is longer, almost cascading to his shoulders. He wore a hoodie with his trademark blue coloring, grey pants, and shoes.
Killua was born as the middle child of a family of known assassins, the Zoldycks. Showing great promise from birth, Killua followed the traditional Zoldyck training, which was imparted to him by Silva and Illumi. He had already mastered many killing techniques at a tender age and was set to be one of the best assassins the family had ever produced. At the age of three, he started training in tailing that routinely put his life at risk.
At a young age, he fulfilled three of Alluka’s requests, causing Nanika to take over. He asked her how to revert the change, and it explained its powers to him. He decided to keep it a secret from their parents, who were however informed by Mitsuba after she witnessed one episode. Silva and Kikyo questioned him about it, and he relayed what Nanika told him, adding that refusing four demands resulted in death only after Mitsuba is killed. At the age of six, he was forced by Silva to battle in the martial arts tournament at the Heavens Arena until he reached the 200th floor, after which he was allowed to return home. It took him two months to reach the 150th floor, and a total of two years to get to the 200th.
Gon Freecss (ゴン゠フリークス, Gon Furīkusu) is a Rookie Hunter and the son of Ging Freecss. Finding his father is Gon’s motivation in becoming a Hunter.
Gon is a young boy with long spiky black green tipped hair and large, hazel brown eyes. His usual outfit is composed of a green jacket with reddish edges covering a black or white tank top underneath, green short shorts, and green, laced boots. In some arcs such as the Greed Island and Chimera Ant arcs he takes off the jacket and wears only the tank top. In the Greed Island arc and at the beginning of the Chimera Ant arc he wears the Paladin’s Necklace, a Greed Island card with the ability to purge any external effects to a card the wearer is holding.
At the age of twenty, Ging Freecss returned home to Whale Island for the first time in eight years carrying his infant son, Gon. When questioned about the child’s mother, Ging simply mentioned that the pair had separated. While Ging tried to leave Gon in his grandmother’s care for a little while, Ging’s cousin Mito was infuriated at Ging’s parenting and got custody through the courts. Ging left Whale Island, never to return.
Since his early youth, due to his father’s absence and Mito’s dislike of Ging, Gon was told that his parents died in an accident when he was a baby. At the age of nine, however, Gon was rescued from an angry mother Foxbear by a man named Kite—a professional Hunter and a student of Gon’s long lost father. After hitting Gon in the face, Kite attempted to kill the Foxbear’s cub but Gon protected it. Kite admitted to looking for Ging as a final test to be seen by his master as a true Hunter. Kite’s admiration of Ging awoke in Gon the goal of meeting his father. In order to do so, Gon was driven from that moment to obtain a Hunter License, also desiring to know what would cause Ging to choose his profession as a Hunter over being a parent as his motivation for becoming a Hunter.
Growing up, Gon was homeschooled and the only friend his age he had was Noko. The rustic life endowed him with keener senses and higher physical abilities than most. As he told Kite, he managed to bond with the Foxbear cub. On the occasions where all-female ships landed on Whale Island, Gon would take them to town and they would teach him “a lot of stuff”.
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