He is Gon's father and a legendary hunter that have made many contributions to the world. He is considered one of the 5 strongest men in the world. He created the game "GREED Island" with the help of his comrades. With this, his son Gon has given a hint to find him in the game and finish it. His fighting skills and abilities are still a mystery. He knows a lot about the secret of the world beyond this world called the Dark Continent. Ging possess great leadership skills and the ability to manipulate the situation to his own use.
Tsezguerra is an experienced Money Hunter and 1-Star Hunter. He is hired by Battera to beat Greed Island and also tests the people who want to enter Greed Island in order to earn the 50 Billion prize money. He and his team ally with Gon, Killua, Biscuit, Hisoka and Goreinu to take part in the dodgeball game against Razor. He and his team later engage Genthru's in a game of chase in order to buy time for Gon to train against Genthru's "Little Flower" ability and for Killua to heal his injuries.
Bisuke is a 57-year-old woman who looks like a 12-year-old girl, and is a master and experienced teacher of Nen. She continues the Nen training Wing gave to Gon and Killua during the Celestial Tower arc. As a Treasure Hunter, Biscuit loves collecting rare jewels (and gets very excited about them; she has a habit of naming them) and getting money. Biscuit has a devious personality. She initially uses her cutesy appearance and demeanor to her advantage whether it's for information gathering, getting what she wants, or even in combat by acting innocent and helpless so most people will usually put their guards down around her. However, as a teacher of Nen, she has a stern and serious attitude towards her students. Though in the beginning she was out to destroy Gon and Killua's friendship, at the end of Greed Island she acknowledges (albeit, in her head) that she's close to developing parental feelings toward the two of them. (Source: Wikia)
Genthru is a Greed Island player. At first he works together with a big group of players, monopolizing defense spell cards so they can steal people's cards using offense spell cards. Genthru is the player killer know as "Bomber". He betrays his group by using his Nen ability. Genthru has two main attacks: Count Down and Little Flower. He activates Count Down by touching someone and saying the word "Bomber" in a sentence. An invisible bomb is activated, exploding on the command "Release". The bomb is deactivated when saying "I've caught Bomber" while touching Genthru. This is prevented by Little Flower, allowing Genthru to explode whatever he touches. Explaining his Count Down ability to his target is required for it to work. When pretending not to be Bomber, Genthru explains to Gon and Killua that Bomber is "most likely a Manipulation or Emission type user".
Puhat is in the same exam as Killua, Bisuke and Gon and gets hired along with them and others. Unlike Killua, Bisuke and Gon he and Abengane accept Gensuru's offer into an alliance.
Battera is a multi-billionaire spending as much as is needed to buy as many copies of Greed Island as necessary. He makes the players sign a contract stating: don't complain if you get hurt or die, he gets to decide what cards you take with you, you get 50 billion jenny upon completion. It is revealed he spends so much money on this to get the Archangel's Breath card, to cure his comatose lover. She ends up dying before anyone has finished, and he buys his way out of the contract
Birthday: June 6 Horoscope: Gemini 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. Sometime into the series, Hisoka is revealed to be a recently joined member of the Genei Ryodan, though his association with the organization is, rather characteristically, simply in order to fight a remarkable opponent. In actuality, his membership is a farce, a fact he later reveals at an opportune time. (Source: HunterHunter Wikia, Japanese Wikipedia)