Rayik was a male Vorta who lead Dominion troops during the war.
In 2375, Rayik led a large number of Jem'Hadar soldiers, including First Mogano'gar, to the planet Goloroth in the Romulan Neutral Zone. They established a communications relay and discovered the Tal Shiar's secret laboratory.
Rayik was later killed by thalaron radiation when the thalaron generator was activated. (ST - Tales of the Dominion War short story: "Twilight's Wrath")