

A world inhabited by the race of Men-beings descended from the nephalem, who had been brought into the world through the coupling of angels and demons. A world created by rogue angels and demons led by Lilith and his old comrade Inarius. In the course of the Sin War, Heaven would come to discover what Hell had already done so-Sanctuary. Either way, the Great Conflict ground to a halt on its own-the Worldstone had disappeared, and the forces of Heaven and Hell could only blame each other before realizing that a third party had absconded with the artifact.

Inarius also served under him and tried to make him see the futility of the conflict, but Tyrael would not be swayed. Izual served as Tyrael's lieutenant during the aeons of war, but was captured by Hell during an assault on the Hellforge.

Imperius carried out his own form of justice regardless. The Lord of Terror was captured, with Tyrael and Auriel pointing out that holding him captive would serve their cause better than slaying the demon outright, knowing that he would return. One such example was in battle against demon forces led by Diablo himself. However, he often came to verbal blows with Imperius, who while also a valorous warrior, suffered from pride. Off the battlefield, he administered the Courts of Justice. Originally the Archangel of Justice, his exploits in battle became the stuff of legend. The Great Conflict was fought for time immemorial, and Tyrael was no exception in regards to waging it.
