- The Orcs were originally inhabitants of Draenor. They lived peacefully with the Draenei until the Burning Legion tricked them into joining their ranks. They became bloodthirsty, killed Draenei, and invaded Azeroth. Soon, however, the Blood Craze was lifted.
- The Trolls were once ritualistic savages that roamed the single continent of Azeroth. After the Well of Eternity collapsed, the Gurubashi tribe settled in Stranglethorn Vale. After civil war, the Darkspear tribe left for nearby islands. Thrall saved them from deadly Murlocs.
- Almost no written record exists of Tauren history. However, we do know that their race is as old as the Night Elves, so they were presumably one of the original creations of the Titans. The Bloodhoof Tribe settled in Mulgore with the help of Thrall.
- The Undead were created when the Burning Legion set the Plague of Undeath onto human cities. When the Lich King, Ner'Zhul, began to lose power, some were freed from the mind control. Lead by Sylvanas, they rebelled and called themselves the Forsaken.