First introduced in World of Warcraft, the first worgen were derived from an ancient druidic sect known as the Druids of the Scythe who worshiped the wolf Ancient Goldrinn. The chosen shapeshift form of these druids was the wolf form, but these druids lost themselves to the form's savage nature and descended into feral behaviour. To try to control this savage form, Ralaar Fangfire created the Scythe of Elune with the help of a priestess from the temple of the moon to try control the wolf form, but instead of mastering their powers, the Druids of the Pack, as they had named themselves, transformed into Worgen. The other Druids agreed that they must be locked away, and thus put them into eternal slumber deep beneath a tree in the Blackwald in current day Gilneas.
Worgen were announced as the Alliance's new playable race for the third expansion pack, World of Warcraft: Cataclysm. During the aftermath of the Second War, the human nation of Gilneas sealed itself behind the Greymane Wall to keep Gilneas out of what King Genn Greymane considered to be 'other people's problems'. This prevented the undead Scourge from overwhelming the nation during the Third War. Some years later a civil war broke out in opposition to the isolation of Gilneas. During this time the worgen curse spread through the secluded nation and transformed nearly all of its inhabitants into feral worgen. Years after the initial fall of Gilneas a partial cure is developed and administered to the worgen, allowing them to regain control. However as they begin the process of rebuilding, the Forsaken sent a major fleet to capture Gilneas and use it as a new Horde port. The Cataclysm destroyed the Horde fleet, saving the Worgen, but also shattered the Greymane Wall and destroyed much of their land. With little choice left, the Worgen formed a new pact with the Alliance.
While the Stormwind humans have an American accent, the Gilnean worgen and humans have a cockney British accent.
In World of Warcraft, worgen can be played as the following classes: Druid, Hunter, Mage, Priest, Rogue, Warlock, Warrior, and Death Knight.