Eudana was a Sikarian woman who often monitored their atmospheric sensor.

In 2371, the USS Voyager was invited to Sikaris by Gath Labin. While visiting, she struck up a relationship with Ensign Harry Kim, when he thought she was playing a musical instrument, when it was in fact the atmospheric sensor. She offered to take him to Alastria using their spatial trajector, one of her favorite planets to visit. Once there, he became more interested in using the technology to get Voyager closer to home, and their relationship quickly faded. (VOY: "Prime Factors")