Doctor Phlox was the Denobulan chief medical officer of Enterprise NX-01 during the war. Phlox was born sometime in the late 21st century on Denobula, in the Denobula Triaxa system. As a child, he was informed about the "evil Antarans" by his grandmother. Phlox promised himself he'd give his children an objective view of the Antarans.
Not long after Phlox became a physician circa 1421 N.E, there was an explosion in a cargo ship orbiting Denobula Triaxa. Phlox was part of the first medical team to arrive at the scene, where they discovered seventeen bodies on the bridge alone. That was the first time Phlox had seen that many dead people in one place before.