Gareb was an Aenar male.
In 2153, Gareb was abducted by the Romulans, who convinced Gareb that he was the last of his species. In 2154, Gareb piloted a Romulan warship via telepresence in an attempt to incite war between the Andorians and Tellarites. Later, the Romulans had Gareb attack the Enterprise. Eventually, Gareb's sister Jhamel contacted Gareb and convinced him to destroy the ships he was controlling. This caused the Romulans to execute Gareb. (ENT episodes: "United", "The Aenar")