Killua Zoldyck

Age: 12 (Beginning), 14-15 (Current)
Birthday: July 7th (2011), June 15th (1999)
Height: 158 cm
Weight: 45 kg
Eye Color: Blue
Blood Type: A
Occupation: Assassin (Formerly), Hunter
Nen Type: Transmutation
Equipment: Skateboard, Yo-Yos
Abilities:
Killua Zoldyck is the third child of Silva and Kikyo Zoldyck and the heir (former) of the Zoldyck Family. He is the deuteragonist of the series Hunter x Hunter.

Killua is introduced as a character similar to Gon: cheeky, cheerful, and full of bad ideas. However, contrasting Gon's politeness, Killua can be pretty rude to others, mostly strangers and older people. He is also one of the quickest-thinking characters and often analyzes a situation with great ease and accuracy. Despite his young age, his way of thinking, knowledge, and pragmatism give him the attitude of an adult. He is initially very confident about his abilities and able to gauge other people's abilities accurately.

A stark contrast to his best friend Gon, Killua is highly mature in both thinking and emotion. He can keep his anger in check and maintain rationality better than Gon even when facing a terrifying experience.

Character Background:

Timeline:

Hunter Exam Arc:

Zoldyck Family Arc:

Heavens Arena Arc:

Yorknew City Arc:

Greed Island Arc:

Chimera Ant Arc:

Election Arc:

(Source: Hunterpedia Wiki)