Stardate 49655.2   A bizarre occurrence causes Neelix and Tuvok, who are attempting to transport back to the U.S.S. Voyager from an away mission, to arrive aboard ship as one. The crew is astonished when a strange but oddly familiar alien humanoid with dark speckled skin and pointy ears -- which is neither Tuvok nor Neelix -- appears. The Doctor's bio-scanner shows that Neelix and Tuvok's patterns have merged, causing the pair to become one entity -- Tuvix -- a humor-filled, logic defying fusion of the two crewmen.