Tria was a holographic alien woman who had a single ridge on her heads and several purple spots. She was part of the holoprogram Paris 3.

During his visit to the USS Voyager in 2375, the Kadi ambassador Tomin wished to indulge himself in the pleasures the ship had to offer and paid a visit to Tom Paris' Chez Sandrine holoprogram. There, he spent some time with the holographic Tria and her Bolian friend, Alandra. (VOY: "Someone to Watch Over Me")