Ogre

The Ogre is a large class of Hive that appears in the Hellmouth. The Ogre appears to be massive in size, using powerful melee attacks against its enemies, as well as violent blasts of energy from its head. When it's health is reduced to 50% or less, it can regenerate a small portion of its health every few seconds.

Nothing more is known about the Hive Ogre, it can be found in the Destiny Beta deep in the Grottos. It is inside a hive and off to the side. It cannot be harmed in any way, however, the flash grenade from a Titan can blind him. It has not been further described or by Bungie.

A Level Six Ogre can be found in The World's Grave on the Moon, and can easily be killed.


 * https://www.youtube.com/watch?v=GwqiDabkiZ8&list=UUZmNTSQIXiLL0vlz8x2dObA Video of the Ogre

Edit-The 'Immune' damage indicator is simply used as a placeholder. The player can (slowly) chip away at its health and eventually kill it.
 * It is possible that some ogres, or one ogre in particular, function as a Hive boss. The name Phogoth was seen in the Out Here In The Wild trailer