Hisoka (ヒソカ)

Gender: Male
Birthday: June 6th
Age: 28
Height: 187 cm
Weight: 91 kg
Hair Color: 1999 anime - Blue (Hunter Exam arc), Red (from Heavens Arena arc); Red (2011)
Eye Color: Blue (1999), Yellow (2011)
Blood Type: B
Occupation: Hunter, Phantom Troupe's #4 (former)
Nen Type: Transmutation

Notorious for his cruel and deceitful fighting ability, Hisoka has proven to be deadly. His deviousness and volatility has made many opponents have difficulty anticipating his next move, and this has led to him winning many battles. Using Shu powered poker cards as his primary weapon, he throws them with ease and deadly accuracy.

Also, he is very intrigued by Gon and the potential this young boy has to become an adept and powerful adversary. Hisoka, ever looking for a strong opponent, is willing to aid, or at least not defeat prematurely, someone that could develop into a future opponent.

(Source: HunterHunter Wikia & HxH Japanese Wikipedia)