Born under the sign of the Shadow, and raised by the Brotherhood after his parents were sold into slavery. The Dark Rider's real name is known by few, the mantle he wears is one passed from generation to generation from one exemplary Shadowscale Assassin to the next. Thus creating the illusion of an immortal evil that some beleive is just a myth. The Dark Rider is an incredibly skilled archer whose victims are often found impaled by a single unique ebony arrow adorned with a Jel inscription whose Cyrodilic translation reads, "Forever the Void".
Hail to Sithis, blood's drop on blade's edge. Before you, nothing. Behind you, the Void.