The subject of this article or section originates from non-canonical sources. To find out about what is considered "canon" see LOTR:Canon.
Portrayal in adaptations
Guardians of Middle-earth
A Great Orc Brute, with full armor, armed with a great scimitar and with a amazing force, Mozgog was known to have killed many jealous Orcs to reach his standing in the armies of Mordor. He had no friends and many mortal enemies, making him as dangerous as a cornered animal. Forays into Gondor to harry the enemies of Sauron had earned him the loathing of the proud soldiers of the South, but many had fallen seeking revenge. Mozgog could stay in the fight long after others would had bled out, and every swing of Mozgog’s terrible sword might have been be the end of an enemy.
- Guardians of Middle-earth (First appearance)