Private First Class X. Dominguez was a medic on the G.F.S. Tyr when it crash-landed on Aether, prior to the events of Metroid Prime 2: Echoes. Dominguez's fate on planet Aether is unknown. PFC M. Veroni claims to have spoken to a male doctor about PFC G. Haley's condition, indicating the gender of either Dominguez or LCDR T. Huxley, the medical officer.