Masta

Masta (マスタ, Masuta) is a professional Hunter and one of the judges of the 287th Hunter Examination.

Hunter Exam arc
During the 4th phase of the exam, he was assigned to secretly follow Hanzo, but was noticed by him. In the final phase, he was the referee of the match between Hanzo and Gon.

13th Hunter Chairman Election arc
After Chairman Netero's death, he reappears at the headquarters of the Hunters Association to take part in the New Hunter Chairman Election.