Lieutenant Bobby Davis is the American soldier Tom Paris is made to play in the Hirogen's Sainte Claire simulation, an officer under Captain Miller with a pre-war attachment to the Resistance member Brigitte.
Bobby Davis is the persona imposed on Tom Paris in the fourth-season Voyager two-parter The Killing Game, in which the Hirogen who have captured the ship use its crew as living prey in holodeck wars.
Davis is a lieutenant in the American force commanded by Captain Miller, Chakotay's character. He knows Sainte Claire from before the war, when he was close to Brigitte, and is eager to see her again as the troops enter the town.
The reunion is awkward: Brigitte, played by B'Elanna Torres, is pregnant by a German officer. Davis fights on through the town and then through Voyager's own corridors once the holographic battle escapes the holodeck, until Paris is released from his neural interface.