Chairman of the Hunters Association. Known as the most powerful Nen user in the world. Seen in the anime/manga Hunter X Hunter.
Hardly anything is known about Netero's past. Somewhere in the past, when Netero was 46 years old, he was seen training in the mountains during winter time. He did 10,000 punches of gratitude to the martial arts that helped him mature, named Shingen-Ryu Kung Fu. After every single punch he would clap his hands together and pray. When he first started this it took him 5 to 6 seconds to complete the sequence and over 18 hours to complete the 10,000 punches and prayers. After he completed the sequence he would fall into a deep sleep and upon awakening he would resume the punching, day after day. After 2 years of following this daily routine he noticed a difference; when he finished the 10,000 punches the sun was still up. He continued doing this for another 2 years. At age 50 he managed to complete the 10,000 punches in under an hour. The time he spared by this he used to pray more. When he came down from his training in the mountains he could punch faster than the speed of sound. He demonstrated this at the dojo he had begun his training in, with the grandmaster of the dojo being moved to tears offering him the dojo and asking Netero to accept him as a student. Netero accepted this offer, under the condition that he would be brought some food first.
When Netero was in his mid-sixties, he sought challengers at his dojo which were determined to defeat him. Each challenger was defeated and showed their respect to him with a bow while Netero forgave them. Years later he would fight Maha Zoldyck, the grandfather of Zeno Zoldyck, from an elite assassin family and would be the only person to survive his encounter with the assassin. He also became the 12th chairman of the Hunter Association somewhere and was a member of the Serin Group, a team of versatile hunters which were so skilled they were considered legendary.
Hunter x Hunter The Last Mission
Once the strongest of the hunters were split into "Light" and "dark" sides. Now the dark side hunters plan to massacre all the light side ...