Orcs:
Orcs are said to be the result of the corruption of Elves. They do not like the light and prefer dark places like caves such as Moria. They generally don't even come out in daylight. They enjoy destruction and serve evil in Middle Earth such as Sauron and Saruman.
Orcs stationed at the Tower of Cirith Ungol find Frodo after he was pricked by Shelob. The Orcs then end up almost completely killing each other off when a fight starts over Frodo's Mithril Coat.
