Vox is a Sinner - a human who died and became a demon in Hell. He is one of the Overlords that control territory in Pentagram City, the capital of Hell's Pride ring. Vox is the ruthless CEO of VoxTek – a massive corporation that sells various products ranging from technology to food. 
Vox is also the de-facto leader of the Vees – a triumvirate of Overlords comprised of himself, the moth demon Valentino, who runs a porn studio, and the perky demoness Velvet, who owns a fashion company. 