Charivretha zh'Thane (or Vretha) was an Andorian zhen in the 24th century. She served as Andor's representative to the Federation Council in the late 2360s and the 2370s. Vretha was the zhavey of Starfleet ensign Thirishar ch'Thane (or Shar). Vretha and Shar maintained polite relations, but were at odds for a time when Shar refused to return home to Andor to perform the shelthreth ritual with his bondgroup. (DS9 novel: Avatar, Book Two)