Higmaul - is a first raid in Draenor expansion, which is an Ogre Palace. It is really easy to find it, just look at the map - it is a colossal place! Ogre Empire palace is situated in new Nagrand and is ruled by emperor Mar'Gok. To complete the raid you have to face various bosses and Korag is one of them. You can see him for his gloving runes. His power is magic immunity. He is protected by the shield which you have to destroy. The reward is tier 17 tokens.
Kargath Bladefist – Warlord of the Shattered Hand, Kargath honed his combat skills as a slave in the ogres’ gladiatorial games. He slaughtered countless opponents for the promise of freedom, only to be ultimately rewarded by being locked away with the other retired “champions.” Fueled by rage, Kargath severed his own hand to escape and led a revolt that soaked Draenor in ogre blood. Now, he returns to the arena to teach you the true meaning of savagery.
The Butcher (Optional Boss) – Born in the fetid Underbelly of Highmaul, this ogre may have once had a proper name, but it’s since been long forgotten. Abused and beaten from his earliest days, the hardship only strengthened his body even as it broke his mind. Now there is not an ogre in Highmaul who will not give him a wide berth as he hacks away at slaughtered carcasses to pass his days.
Tectus (Optional Boss) – An ancient embodiment of the chaotic forces that shaped the terrain of Draenor, Tectus has been twisted and enslaved by the maddened Pale Orcs—who themselves barely maintain control over this imposing force of nature.
Brackenspore (Optional Boss) – The Iron Horde juggernaut moored in the waters beside Highmaul drew the attention of Brackenspore, ancient walker of the deep. This aquatic giant spreads fungal growth and moss in its wake, and is driven by primal instinct to eradicate any traces of civilization on Draenor.
Twin Ogron – Guarding the entrance to the Gorthenon atop Highmaul, Pol and Phemos are the personal guard of Imperator Mar’gok. Peerless in strength and determination, what these ogron brothers lack in intelligence, they make up for with sheer size and brute force.
Ko’ragh – Ko’ragh was the only ogre to survive direct exposure to a mysterious relic unearthed by the Highmaul excavations of Nagrand, leaving him with a near-complete immunity to all magic. Rumors abound regarding his connection to the Imperator, with some wondering why Ko’ragh would remain subservient to a sorcerer despite his unique gifts.
Imperator Mar’gok – As the grand Imperator of Highmaul, Mar’gok is descended from a long line of sorcerers who ruled the Gorian Empire. With cunning that matches his brutality, Mar’gok recognized the rising tide of the Iron Horde and what it would mean to oppose them. He has acquiesced to an alliance with Grommash, even as he continues to search for a way to tip the balance of power back into his favor.