When King Yemma agrees to send Goku on Snake Way, he provides him with a guide who takes him to the start of the road with his Messerschmitt KR. The guide seems to be more intelligent and knowledgeable than most of the other Ogres, wears glasses and has two horns instead of one. His exact function in Other World is unknown, but later (in episode "Day 1") he meets Fortuneteller Baba and gives her Goku's message for Master Roshi (which reaches him via Kami and Yajirobe). (Source: Dragon Ball Wiki)