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File:Ben Wootten-Olog Hai.jpg
Olog-hai by Ben Wootten

The Olog-hai were a fierce race of Trolls that appeared at the end of the Third Age in southern Mirkwood and in the mountainous borders of Mordor.[1]




They only spoke Sauron's Black Speech, and it is possible they only existed because Sauron's evil will empowered them.[1] After the War of the Ring, all Olog-hai were killed.[source?]


Olog-hai are described as being taller than a man, and covered in horny scales, carrying hammers and bucklers in their claws, though there is no way of knowing whether this description applies to all of the Olog-hai, or just to those in the battle.[source?]


Olog-hai is a term out of the Black Speech. Olog means troll, hai (as in Uruk-hai) means people.

Portrayal in Adaptations

1982-97: Middle-earth Role Playing:

Olog-hai, also called Black Trolls, were bred by Sauron from lesser Troll stock. They are nine to eleven feet in height, and have black, scaly hides.[2][3][4] Individual Olog-hai include Rogrog[5], Umagaur[6] and Lugronk[6].




  6. 6.0 6.1 Peter C. Fenlon, Jr. (1994), Moria (2nd edition) (#2011)