Early life and careerEdit
Tanzia was accepted into the Trill Initiate Program at the surprisingly young age of 16. She was accepted as a host candidate two years later.
Tanzia Callan entered Starfleet Medical in 2370, graduating with the Starfleet rank of Lieutenant Junior Grade and degrees in psychology and psychiatry. Several months later, Tanzia was implanted with the Gera symbiont, becoming the symbiont's 6th host. At that time her name changed to Tanzia Gera.
Several months after the joining, Tanzia was assigned as Counselor aboard starbase Lya III.
Aboard USS DauntlessEdit
In 2380, Counselor Gera was reassigned as Ship's Counselor aboard the Sovereign-class starship USS Dauntless, where she was also promoted to the rank of lieutenant. Since her assignment aboard the Dauntless, Counselor Gera has formed a friendship with and grown quite close to Captain Koester's daughter, Gem Koester, and is one of the mentors of the starship's Starfleet Space Cadet Corps unit along with Marine Gunnery Sergeant Christopher O'Laughlin.