Lieutenant Hazarstennaj was a felinoid Starfleet officer in the 23rd century. In 2264, she was assigned to the engineering section aboard the USS Enterprise, where she was quickly nicknamed Hazard. Shortly after, the Warp-Speed Classic Vaudeville Company came aboard the Enterprise. One of the entertainers was Tzesnashstennaj, a member of her own species, and the two began a relationship. (TOS novel: Enterprise: The First Adventure)