Killua Zoldyck
Age: 12 (Beginning), 14-15 (Current)
Birthday: July 7th, 2011
Height: 158 cm
Weight: 45 kg
Eye Color: Blue
Blood Type: A
Occupation: Assassin (Formerly), Hunter
Nen Type: Transmutation
Equipment: Skateboard, Yo-Yos
Killua is the deuteragonist of Hunter x Hunter and the third child of Silva and Kikyo Zoldyck. He was raised to be the heir of the Zoldyck Family assassination business, though he's since left that life behind.
At first glance, Killua seems like Gon's counterpart—fun-loving, impulsive, and naturally charismatic. But where Gon tends to be respectful, Killua's got a sharper edge. He can be blunt or rude, especially to strangers and authority figures, and he doesn't bother with pleasantries the way his best friend does. That said, he's got a sharp mind that works faster than most people can follow. He analyzes situations with eerie accuracy and tends to think several steps ahead, which is unusual for someone his age. Fans often note how mature his worldview is compared to other kids—less naïve, more pragmatic, with the kind of calculated thinking you'd expect from an adult.
What really sets him apart from Gon is his emotional control. While Gon can lose himself to anger or desperation, Killua keeps a clear head even in genuinely terrifying situations. He's the one thinking strategically when everything's falling apart. Initially confident to the point of arrogance about his own abilities, he's also surprisingly good at reading what others can do, which has saved him more than once.
Content compiled by AnimeList.moe from publicly available sources.