"Darkness"

Darkness was The Shadowed One's own "shadow", always lurking nearby, waiting for The Shadowed One to make just one mistake - as soon as he did, Darkness would descend, kill him and take his place as ruler of the Dark Hunters. Until then, he had only been occasionally seen disciplining weak Hunters to keep his skills sharp.

Powers and abilities
He had four clawed arms and could slip through the slightest spaces, but even The Shadowed One suspected that those were not his only powers. It seemed that one of these hidden powers was the ability to create stone barriers out of thin air.