Janeway as a nightclub owner
Katrine was the identity of Captain Janeway in the French Resistance holodeck simulation created by the Hirogen.
She was the owner of the "Coeur de Lion", a bar in the town, of Sainte Claire which acted as a front for the local French Resistance cell.
With the use of an implanted neural interface, the crew of the USS Voyager believed that they were the characters.
Janeway's real identity was restored by The Doctor; however, she continued to play along with the simulation, unbeknownst to the Hirogen. After disabling the crew's neural interfaces, Seven of Nine and Captain Janeway were able to stage a counterstrike which allowed Captain Janeway to defeat the leader of the Hirogen and return control of the ship to the Starfleet crew. (VOY: "The Killing Game", "The Killing Game, Part II")