T-Stormtroopers were soldiers fighting for the T-Empire under the command of Am and Karre, twin dark side adepts who were brought into existence via the dark side of the Force with the goal of restoring Imperial dominance to the galaxy. These troopers bore a resemblance to the stormtroopers utilized by the First Order, a Imperial nation that collapsed following the Battle of Exegol.
Following that conflict, the T-Stormtroopers and the rest of their remaining forces tried to seize galactic power using a Gemini-class Star Destroyer, but Karre betrayed the group and rendered the vessel inoperable.