From Destinypedia, the Destiny wiki
Unstoppable Ogres are powerful Champions of the Hive, blessed with higher mobility and the resistance to staggering. Once engaged in combat, the Ogre will ever rarely walk like their other counterparts, instead, they will continuously sprint towards their targets. If far enough away, the Ogre will use its Eye Blasts to neutralize the distant threat, but prefers its quick and powerful Ground Slam. This Ground Slam is capable of instantly killing Guardians regardless of the player’s power level. It will not stop nor stagger unless a Guardian is using Unstoppable Rounds, which will stagger the Ogre and provide some time to sink damage into the raging monstrosity.
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