Koghar, Comrade of Nashok, is a Unique Bogan Trapper found in The Hunter's Den (Paths of the Drowned) in Act V of Diablo III. He spawns when players touch his trophies. Only one of the two (Koghar or Nashok) will appear.
In combat, he has Waller and Orbiter affixes. His retinue of Boggits and Trappers also comes to his aid.