Knuckle Bine

Knuckle Bine (ナックル=バイン, Nakkuru Bain) is a Beast Hunter and Morel's apprentice.
Knuckle is first introduced as one of the assassins sent by Netero to take down Gon and Killua in order to gain entrance into NGL. After meeting the children, he indulges in training them every night for a month by allowing Gon to spar with him after doing his Ren training. At the end of the month, he and Shoot McMahon defeat the kids and enter NGL to assist in exterminating the Chimera Ants.
Knuckle participates in the extermination of Chimera Ants throughout the Republic of East Gorteau as well. He and Shoot McMahon are sent to take out Menthuthuyoupi, one of the three feared royal guards.