Koharu might be a good fit for this. I wouldn't say she is loyal to the empire, but she is forced to be loyal to the empire. Her family are held hostage by the empire, and has also been forced to enlist in the Garlean military. Currently she is working as an information broker in Eorzea, but beneath her cover, she is a Garlean spy, gathering any useful information and reporting it back to the empire, hoping one day she would be able to free her family from the Empire's grasp.
If this has caught your interest, you can either pm me here or ig (Koharu Iyashi)!
If this has caught your interest, you can either pm me here or ig (Koharu Iyashi)!