T'Sona was a female Vulcan Starfleet security officer. Soon after transferring to the USS Enterprise-E in 2379 she was part of the Sierra team to Tezwa's Kolidos Desert under Lieutenant Jim Peart.
She was part of the strike team that traveled to Anara-Zel to capture Tezwan General Gyero Minza, stunning several enemy combatants then standing guard in the main hallway while Scott Fillion captured the General. T'Sona was also part of the boarding team who secured the freighter Venezia's Bridge and located its crew manifest after its impounding by the Enterprise.
T'Sona still served with the Enterprise through at least 2381; during the Borg Invasion of 2381, T'Sona and fellow Enterprise security officers Randolph Giudice, Kirsten Cruzen, Peter Davila, Bryan Regnis, and Jarata Beyn were amongst the forces temporarily transferred to the USS Aventine when the vessel plotted to attack and capture a Borg scout craft, hoping to secure its vinculum. Beyn and T'Sona used compressed-gas tools to sink self-sealing anchor bolts into a bulkhead, allowing the team to cross the gap to their objective. As the rest of the team crossed the expanse, Beyn and T'Sona remained behind to watch their backs.