Satori

Satori is a youkai that lives in GeGeGe Forest. He has been portrayed as both a friend and a foe of Kitarou.

In the manga, Satori is an ape-like youkai with light-colored skin and fur that cover the majority of his body, excluding his face, hands and feet. He has round eyes, that are often in an angry expression, with both irises pointing in different directions. His teeth are also noticeably flat.

Within the 1971 anime, Satori is a youkai with pink skin, a balding head with white hair by the side and a matching beard. He wears a dark gray robe with loose, long sleeves.

Within the 1996 anime, Satori is an ape-like youkai with yellow skin and gray fur that cover the majority of his body, excluding his face, hands and feet. His eyes are white with blue irises, both pointing in different directions.

(Source: GeGeGe no Kitarou Wiki)