Cosplayers: Diablo, lord of Terror

Diablo, the Lord of Terror (full name Al'Diabolos), is one of the seven lords of the Burning Hells, as well as one of the three Prime Evils alongside his older brothers, Mephisto and Baal. Naturally, he's one of the most powerful and infamous demons to ever exist, and he caused no shortage of trouble for the people of Sanctuary.

When Diablo and his brothers were ousted from the burning hells and into Sanctuary by the four lesser evils, they ravaged the world until a group of mages called the Horadrim defeated the three brothers and, with the help of Archangel Tyrael, sealed their spirits inside objects called soulstones. However, the brothers could still exert their influence upon humans even while trapped, and if they lodged their soulstone into a human's head, they could take possession of their body.

And thus began the Diablo series!

This particular costume represents his appearance in Diablo 3.