Another character, what am I even doing with my life.
Fabled Archives, scion of House Ea'thr of Kastrot. This Unicorn is the stallion whom Heartless likes to impersonate the most, though his disguise lacks the tattoos that the real Arc has in the present - he got the tattoos in Unyasi, which is after Heartless saw and was able to mimic him.
Still, as Arc is far away in Unyasi and didn't really travel outside of his family's island before leaving, Heartless is pretty much in the clear to roam about Equestria as he pleases, kidnapping young maidens and stealing their souls erm. Frolicking through the flowers.
…Yeah. Yeah, that's it.