The Horde, a faction founded by Orcish immigrants from Draenor, have survived in the hostile world of Azeroth by forging alliances with local races such as the Tauren people, the Trolls, and the undead of the Forsaken.
Orcs - Thrall
The orcs once cultivated a noble, shamanistic society on Draenor. Tragically, the proud orc clans were corrupted by the Burning Legion and used as pawns in the Legion's invasion of Azeroth.
Trolls - vol'jin
Exiled years ago from their lands in Stranglethorn Vale, the Darkspear trolls attempted to make a new life for themselves amongst the races of the Horde
Forsaken - Sylvanas
Undead humans and elves freed from the Lich King's control, the Forsaken are a strange and dark force. Hailing from the twisted, skittering darkness of Undercity, the Forsaken are nominally allied with the Horde but serve only themselves.
Blood Elves - LorThemar
Those now known as blood elves were once high elves. The transition came about during the Third war, when King Arthas turned his attention towards Quel'Thalas.
Tauren - Baine Bloddhoof
The plains of Kalimdor have long been a home to these gargantuan nomads. The tauren are a race of shamans, hunters, druids and warriors who long ago developed a complex culture and system of living without the aid of stonework, steel or conquest
Goblins - Gallywix
Goblins are small humanoids, crafty and shrewd, bearing an overwhelming interest in commerce and a strong curiosity about mechanical things.
Huojin Pandaren - Ji Firepaw
Honorable and filled with a love of good company, good food -- and every now and then, a good friendly brawl -- the pandaren have been content to live in seclusion, allowing their culture to flourish and thrive away from the influence of the outside world.