Created by the Titans during their visit to Azeroth, Mountain Giants are gentle, gigantic humanoids of rock, and possess almost limitless strength as well as immunity to magic (though in Warcraft 3 The Frozen Throne they didn’t have magic immunity, only magic resistance after researching the ability). Awakened from their slumber by Malfurion Stormrage after the invasion of the Burning Legion, they now protect the forests of Kalimdor.

Mountain Giants continue to grow from the day they are born until they become too heavy to bear their own weight. At this point, they will settle down and over time, become mountains.