Eta is one of the Game Masters and creators of Greed Island. She is Elena's twin sister, one of the other creators of the game. Eta is in charge of the reception of incoming players, her main role being to explain the basic rules of the game. She monitors everyone that comes to the island, from players to intruders. Eta has shown to be very professional and acts almost machine-like when detailing the rules of Greed Island. Eta's Nen ability is unknown, but she is able to conjure swords and turn them to cards while explaining the game's mechanics. Whether this is her ability or not has yet to be revealed. She was able to detect the Phantom Troupe when they tried to enter Greed Island by boat, but due to the vastness of the island, it is highly unlikely that she used En.
Hunter x Hunter
Hunter x Hunter is set in a world where Hunters exist to perform all manner of dangerous tasks like capturing criminals and bravely searching for lost treasures in uncharted territories. Twelve-year-old Gon Freecss is determined to become the best Hunter possible in hopes of finding his father, who was a Hunter himself and had long ago abandoned his young son. However, Gon soon realizes the path to achieving his goals is far more challenging than he could have ever imagined. Along the way to becoming an official Hunter, Gon befriends the lively doctor-in-training Leorio, vengeful Kurapika, and rebellious ex-assassin Killua. To attain their own goals and desires, together the four of them take the Hunter Exam, notorious for its low success rate and high probability of death. Throughout their journey, Gon and his friends embark on an adventure that puts them through many hardships and struggles. They will meet a plethora of monsters, creatures, and characters—all while learning what being a Hunter truly means.
