"Darkness"

"Darkness" was a Dark Hunter who ensures "The Shadowed One" never became compassionate and jeopardize the Dark Hunter organization.

History
"Darkness"'s early history is unknown. He acted "The Shadowed One"'s "shadow", lurking nearby to await the day, if it ever came, that "The Shadowed One" shows weakness. If so, he would have descended upon the Dark Hunter leader and assume leadership of the Dark Hunters.

To carry out this task, "Darkness" follows "The Shadowed One" constantly. Whenever he leaves Odina, "Darkness" manages to follow him. In the times he does leave him, it is only to keep his skills sharp through the discipline of disobedient Dark Hunters. He did this 250 years ago, when he interfered with the attempt of Zaktan, Vezok, Reidak, Hakann, and Thok's coup against "The Shadowed One".

Recently, "Darkness" was known to follow "The Shadowed One" to Xia. Although "The Shadowed One" had a desire to kill those who knew of his discovery of three vials of Makuta Virus, he did not kill "Darkness", who was concerned only with that of him showing weakness and wouldn't discuss the matter or act on it. When "The Shadowed One" had a throne constructed for him, "Darkness" witnessed him talk with Kalmah, Ehlek, and Mantax from a rafter above.

Dark Mirror
In the Toa Empire, Darkness was a member of Pohatu's resistance team and was able to gather all of the Dark Hunters in Metru Nui to join in the final assault against Tuyet. In the battle, Darkness used his powers to enter into the Coliseum through cracks in the wall along with Takanuva. However, he was swept away outside the Hall of Masks after Tuyet unleashed her Water powers; it's currently unknown if he's still alive or not.

Powers & Tools
"Darkness" wielded dual claws on each hand, and could slip through tight spaces, although "The Shadowed One" suspects that are not his only powers and considers him one of the most powerful Dark Hunters.

Trivia

 * Darkness does not wear the Kanohi Kraahkan in the story. He is depicted wearing it because that is how his maker chose to design him.