Feezal Phlox was a Denobulan scientist, an expert in quantum optics. She was also the second of Dr. Phlox' three wives. In 2152, she attended a medical conference that Enterprise NX-01, carrying Phlox, one of her husbands, also attended. She delivered a neutron microscope to the Enterprise and provided instruction on maintaining the technology. In 2161, she attended the founding of the United Federation of Planets. (ENT: "These Are the Voyages...")