Corporal O'Malley was a male human MACO trooper during the Earth-Romulan War.

In 2156, O'Malley was assigned to the Enterprise when he boarded a M'klexa vessel alongside Selma Guitierrez and T'Pol, securing the ship. (ENT - The Romulan War novel: To Brave the Storm)

Community content is available under CC-BY-SA unless otherwise noted.