Little is known about Yatan's past, except that, when animals exposed the mysterious radioactivity of Mount Damuin in Karunda developed mental faculties equals to that of man, and under the influence of Gorilla Morab, began to attack cities, led , the WSU sent a team led by Yatan, an orphan found in the Karundan Jungle, to stop the revolt. Yatan was helped in his mission by Anne Sanders, the pretty survivor from an earlier animal attack. Yatan disappeared shortly thereafter and his current whereabouts are unknown.


Included in the first volume dedicated to Zembla.