Satotz

Satotsu, known as Satotz in the Viz Media translation, is a seemingly mouthless man, the appointed examiner for the first part of the Hunter Exam. He tests the examinees' stamina by leading them on a marathon of initially unknown length through an underground tunnel. Though he seems only to move his legs at a fast walking pace, the examinees are forced to run faster and faster to keep up with his speed. After they emerge from the tunnel, Satotsu then leads the examinees through the Numere Marsh, nicknamed the "The Swindler's Nest" (詐欺師の塒 Sagishi no Negura), a swamp filled with deadly man-eating animals, before leaving them at the site of the second exam.

As a Hunter archaeologist in his normal profession, he was also inspired by Ging in taking up the Hunter license. He initially simply felt a strong civic duty to carry out his role as a judge, he progressively takes a liking to Gon and wishes to help him.