The Mask of Dharak

The Mask of Dharak (ダラクの仮面 Daraku no kamen) or Dharak's Mask is the manifests mask of Dharak.

Overview
Dharak's Mask is a form of appearance from the after transformation process of the Hōgyoku Full Form. This form (which is a different outlook to each Hōgyoku Keeper) completely changes there physical appearance, making them a blend of a demonic, zombie, dead being. There attitude and personality is changed to a dark, selfish, mindless and unstable individual being that clams that it doesn't feel pain and desires to completely destroy and annihilate anything it sees in its path becoming a monster unable to reason with.

After the defeat of Dharak, the mask fell into the hands of Anastasia The Twilight Princess and she stated it was odd for for the mask to still exist and that Hōgyoku Keepers disintegrate after they have been beaten. During the Light of Destruction arc, Dharak's Mask reappeared as Anastasia explained she had kept it all this time in a safe location.