Illidan (Warcraft III)

In the dark days, before the War of the Ancients, Illidan was one of the few non-high-borne practitioners of magic. Though his older brother, Furion, warned him that magic was an evil, corrupting power, Illidan steadfastly refused to give up his coveted art. Over time, the noble night Elf lost his soul to a dependency for magic's chaotic energies. Though Illidan used his dark powers to aid his brother against the demons of the Burning Legion, he ultimately betrayed his people by siding with the evil Queen Azshara and her followers. After the war ended and the landmass of Kalimdor was shattered forever, Illidan created a new Well of Eternity to ensure that his coveted, corrupting magic would not disappear from the world. For his sin, his brother, Furion, commanded that he be chained beneath the earth for all time. Illidan has remained caged in darkness ever since.

Quotes

 * See Warcraft III Illidan quotes