Dr. Phlox is the Denobulan chief medical officer aboard the Enterprise NX-01 in Star Trek: Enterprise. Played by John Billingsley, he is a compassionate, highly skilled physician with a deep curiosity about human culture and an optimistic, open-minded approach to medicine and life. Unlike most of his reclusive species, Phlox embraces interspecies interaction, often blending traditional and unconventional medical techniques. He has a strong moral compass but is not afraid to challenge human ethical norms when necessary. His distinctive physiology allows him to function on little sleep, and his cheerful demeanor and love for Earth's oddities, particularly its cuisine and films, make him a unique and endearing member of the crew.