Sisko character jug produced in Indonesia for Applause of Woodland Hills, California, in 1997. Benjamin Lafayette Sisko is a fictional character in the Star Trek franchise portrayed by Avery Brooks. He was the main character of the television series "Star Trek: Deep Space Nine" (DS9), which was originally broadcast between 1993 and 1999. As a Starfleet officer coming up through the ranks, Sisko was mentored by Curzon Dax, a joined Trill serving as United Federation of Planets ambassador to the Klingon Empire, when the two were stationed aboard the USS Livingston early in Sisko's career. The symbiotic nature of the joined Trill becomes a significant aspect to Sisko's later relationships with his science officer Jadzia Dax and counselor Ezri Dax.