Born in a city once known as Suramar , Illidan had a twin brother . There was nothing special about their growing up , merely two brothers that were side by side , learning magic . Illidan in particular became a sorcerer , learning what he could . Both of them in particular grew to fancy a priestess , Tyrande , with them both gently needling one another about it . She was strong , beautiful , respected , and they adored her .
Until war came at their doorsteps . Illidan defected to the other side -- to the shock of everyone -- and was labeled The Betrayer of his people . His intentions were noble , something so secret that he merely bore the title branded into him , and took it with him . When the war ended , he was imprisoned for years , and merely allowed himself to be . Until , of course , their enemy returned , and he was freed under the circumstance to battle them and turn the tide . He agreed , only to consume a dark and fel energy once he was out , enraging his jailer . This energy twisted his body , and he grew massive , turning into a near demonic being .
He tore through the demons , and took up a seat of power far from his homelands , far from his brother and the love of his life . They thought him a Betrayer , and he only allowed them to believe it . As he grew restless in the Outlands that he claimed , he took down several foes , and eventually , was reunited with a people as their original enemy came down on them once more . He revealed that his intentions all along had been to burn them from the inside out , to be a part of them to get close to their true leader so he could prevent catastrophes like the wars that his people suffered .
It was a battle with a Legion of enemies that drew him into this world . A great rift tore open , and he was thrust into it , between lands , as magic scoured the earth . He was brought into Novus , shedding his immortality and losing his many people as his hooves landed and wings crumpled from impact . Now he seeks to find survivors , if he can .