Tal

Tal was a Trill symbiont introduced in the Star Trek: Discovery episode People of Earth.
Born hundreds of years before the 32nd century, Tal had been joined with seven individuals by 3189. These included Kasha, Jovar, Madela, Cara, Senna, Gray, and the human Adira. Tal had been committed to the United Federation of Planets over its long life. Prior to Adira being commissioned as a Starfleet officer, four of Tal's hosts had been Starfleet officers. Tal's first host Kasha had played the cello, resulting in Tal becoming musically inclined itself and passing on musical skills to subsequent hosts. 
Tal remained loyal to the Federation even after the Burn of the mid 31st century made dilithium scarce and warp travel largely untenable, resulting in the near total collapse of the Federation. By the 32nd century even Earth had left the Federation, reestablishing itself as an independent United Earth. Tal's fifth host Senna Tal traveled to Earth around 3177 and then sent out a message for others who still believed in the Federation to join him there. They left on a starship to travel to Federation headquarters. Senna died some time after the ship left Earth and Tal was transferred to another Trill named Gray who was also on the ship.
A few days after Gray had taken on Tal disaster struck when the ship was struck by an asteroid, resulting in Gray's death. The ship's computer determined that despite being human Adira could take on the Tal symbiont, which they did. While the joining itself was successful, Adira was unable to access the memories of Tal's previous hosts. Returning to Earth, Adira Tal served as an inspector for the United Earth government.
When the time displaced USS Discovery arrived at Earth in 3189, Adira elected to travel with them to find Federation headquarters. First the ship went to Trill. Adira Tal traveled to the Caves of Mak'ala, where they were able to resolve the issues preventing Adira from merging with Tal. Adira was then able to recite the names of Tal's previous hosts, and Tal's memories began to return of its previous existence. 
Adira was then able to provide Discovery with an algorithm that allowed the ship to find Federation headquarters. Discovery traveled to headquarters and officially resumed duty in Starfleet at that time.
Category:Star Trek Heroes
Category:Aliens
Category:Elderly
Category:TV Show Heroes
Category:Live Action Heroes
Category:Wise
Category:Doctors and Scientists
Category:Loyal
Category:Leaders
Category:Lawful Good
Category:Protectors