Oberk was originally from the planetUkio, and was known as a show-off. He was transferred to scout trooper duty when it was discovered he could skilfully pilot a 74-Z speeder bike.
During a tour of duty on Endor, Oberk encounterd and held Rebel operative Leia Organa at pistol-point and, after Oberk ordered his comrade to ready his speeder, EwokWicket W. Warrick, with whom Organa had recently become acquainted, attacked Oberk with his spear. Oberk was momentarily distracted before Organa bludgeoned him and knocked him unconscious.