Despite supposedly serving Equestria just as the Royal Guard did, the Night Guard were a completely separate army. There was a whole detachment of them right there in Canterlot, but until today, Artemis could have counted the number of batponies she’d ever seen on two hooves. So, two, in other words. And those were just glimpses during a large ceremony. Probably nopony else in the crowd even noticed them besides her. Heck, at the time, Artemis wasn’t even sure that she’d seen actual bat-ponies. Only now, after having gotten a good, close-up look at one, could she be certain.