Welcome to Know Your LotRO Lore, a new weekly column here at Massively showcasing the lore of J.R.R. Tolkien's world as it intersects with Turbine's Lord of the Rings Online.

Probably the most predominant evil race in Middle-earth, the Orcs come in many shapes and sizes. Their origins are often debated, and their definition has actually been changed throughout the life of Tolkien's work. One thing is for certain though: Orcs are filled with hate, and lead miserable lives for the service of Sauron.

They also evoke many unanswered questions from those new to the Tolkien scene. Did Tolkien invent the Orc? Are Orcs really just cursed Elves? Are goblins considered Orcs? What is an Uruk? Luckily for us lore buffs, there aren't simple yes or no answers to these questions. Follow along through this week's Know Your LotRO Lore to find out more answers to your Orc questions.

This article was originally published on Massively.