Tanis was an actress in Kelis the poet's troupe of actors on a Class L planet. She played the part of Captain Janeway in Kelis' plays.
In one scene, she told the actor playing Chakotay that she longed for his touch. In another scene she confronted the actress playing Seven of Nine, known as the Queen of the Borg, and threatened to kill her. Instead, she asked for a peaceful solution between the two. (VOY: "Muse")
Tanis was portrayed by Kathleen Garrett.
Her name comes from the script.