Yutan was a humanoid native of Neural, one of the Hill People. When James T. Kirk was attacked by the Mugato, Yutan came upon him and McCoy. McCoy told Yutan to find Tyree, the leader of the Hill People and a friend of Kirk's, in the hope that he might have a cure for Kirk. Yutan found Tyree and his wife Nona, who could cure the bite of the Mugato, and informed them of the situation. (TOS: "A Private Little War")