Reug Yucon was a Bothan male scientist, with special training in trans-system and galactic atmospherics, who lived in the years before the outbreak of the Clone Wars. In 26 BBY, Reug Yucon traveled with fellow scientists Tic Verdun, Joveh D'a Alin, Fort Turan, and Talie Heathe on an expedition to the planet Haariden to carry out investigations on geological and volcanic activities there, to accomplish global mapping for the mineral titanite, and to determine the effects of the world's environment on its ecosystem.