Rajaat, known as the First Sorcerer and the WarBringer, is an ancient being from a forgotten age in Athas's distant past. He first appeared as a benevolent figure, teaching Preserver Magic to the people of the Green Age. Later, he selected a number of Champions and taught them how to combine Defiling Magic with psionics. With the Champions' help, Rajaat wanted to fulfill his ultimate dream: to eliminate all of the new races and regain the glory of Athas's earliest days, a time called the Blue Age. The Champions fought the Cleansing Wars, wiping out numerous races and defiling the land. Before they finished Rajaat's mad dream, they discovered that it wasn't the glory of humanity Rajaat wanted to attain. He wanted to give all of Athas back to the Halflings. Realizing that they, too, would have to be eliminated, the Champions revolted and imprisoned Rajaat beyond the shadow plane of the Black, in a place of nothing known as the Hollow. There he remained, guarded by The Dragon, until the 190th King's Age, in the Year of Friend's Agitation, in the tenth year of Tyr's freedom.
Rajaat was obsessed with returning the world to its Blue Age, an age when the world was covered by a vast ocean and ruled by halflings, the only intelligent native race besides thri-kreen. He orchestrated the extermination of all the "impure" Athasian races created since then, all but the halflings and the thri-kreen, through his immortal followers, the Champions. When the Champions learned that Rajaat intended to destroy the humans as well (the Champions had assumed that Rajaat was human like them, and believed that humans were the original race which he intended to rule the world) they rebelled against him. The rebels could not slay their master because of his vast and unparalleled knowledge of sorcery. Instead, they imprisoned him in a place called "The Hollow".