Damkath, the Mask
From Destinypedia, the Destiny wiki
Damkath, the Mask is a unique Hive Ogre that may be summoned during the final wave of Escalation Protocol.
Gameplay
Damkath is one of the final Wave 7 bosses at the end of the hoard mode Escalation Protocol. It and several other adds, mainly Dread Unhallowed enemies, will spawn, most notably Shriekers that are recommended to be killed instantly. It is immediately noticed that the front of the Ogre is immune to any type of damage. The only possible way to harm Damkath is to damage the backside, where a pulsing sack is located. It is recommended that at least 3 players and fast mobility are needed as, when Damkath faces the player, it is basically impossible to shoot the weak spot. If having more than one player, align everyone in a formation around the Ogre, as to constantly land damage on the back if facing a Guardian. Killing the Ogre ends the hoard activity and rewards the player with a shader called GENOTYPENULL-ZERO along with a chest that can only be opened with a Decrypted Key.
Trivia
The name Damkath sounds similar to a World of Warcraft warrior named "Danath," a character belonging to Blizzard Entertainment of the same company that also owns Bungie, Activision.