Robert O'Reilly is an American actor best known for his role as Gul Dukat in the popular science fiction television series Star Trek: Deep Space Nine. He has appeared in various other television shows and films, showcasing his talent in both dramatic and comedic roles. In addition to acting, O'Reilly has worked as a voice actor in video games and animated series. His contributions to the Star Trek franchise have made him a recognizable figure among fans, and he has participated in numerous conventions and events celebrating the series and its characters.