Night Seifer was a joined Trill, second-host of the Seifer symbiont and second symbiont of the Night host. He began his symbiotic existence in 2379, joined against his will, when his previous symbiont, the Gotens symbiont, was stolen and replaced. Before his forced-joining, he was known as Night Gotens. Night Seifer served as a Starfleet first officer and then commanding officer aboard the USS Phoenix-X in the late 24th century. (Star Trek: Phoenix-X)