A member of the Romulan delegation that visits Deep Space 9 in 2371 to collect intelligence on the Dominion, secretly an agent of the Tal Shiar with orders to destroy the station.
Karina is a Romulan who appears in the third-season Deep Space Nine episode Visionary. She comes aboard with her colleague Ruwon to receive the reports on the Dominion promised to Romulus in return for the cloaking device fitted to the Defiant.
The pair interview the senior staff at length and show a particular interest in Odo. Their conduct is cold and suspicious, but nothing suggests their real purpose until O'Brien, suffering from radiation poisoning, begins jumping a few hours into the future and sees the station explode.
He learns that a cloaked warbird means to collapse the wormhole and destroy the station, cutting the Dominion off. Confronted by Sisko with the facts, Karina and Ruwon are sent away.