Li Paz was a Bajoran member of the Maquis, a former compatriot of Chakotay and B'Elanna Torres who was slaughtered by the Dominion-reinforced Cardassians in 2374. (VOY: "Hunters")

The day after Torres learned the news that all of her Maquis friends were dead, she created the holodeck program "Torres Zeta-1" in which Li was slaughtered along with three other of her Maquis buddies, Sahreen, Meyer and Nelson. The purpose behind this was in order to "feel something," as she otherwise felt nothing at all viewing their dead corpses. (VOY: "Extreme Risk")

Li was played by an unknown actor. Based on Bajoran naming conventions, it is possible, but not unlikely, that he was related to Li Nalas, as they share the same family name. Correction: Li Paz was named after Ron Li-Paz, a friend of the producer; not related to Li Nalas.