Uyohn was a male engineer who worked within the Galactic Republic's Futures Program, specifically on Brentaal. He was later selected by Director Orson Krennic to be a part of Galen Erso's kyber crystal research team. In 1 BBY, Krennic journeyed to Eadu, to the Eadu Energy Conversion Laboratory where the team was stationed, after discovering Erso's treachery. Krennic observed Uyohn standing rigidly in the lineup of the team, his face displaying a mix of fear and a foolish, desperate optimism.