Kevin=
Kevin is a character from Frank Miller's Sin City

Sin City (film)

Sin City, also known as Frank Miller's Sin City, is a 2005 crime thriller film written, produced and directed by Frank Miller and Robert Rodriguez...

. He is a cannibalistic serial killer under the wing of Patrick Henry Roark.

Background

Kevin came to Roark for religious counsel, having already given into his cannibalism

Cannibalism

Cannibalism is the act or practice of humans eating the flesh of other human beings. It is also called anthropophagy...

and being wracked with guilt. Though appearing to be mute, he spoke to Roark in what he described as the 'voice of an angel'.

Roark took him in and used his considerable influence to cover up Kevin's killing, having him live on the Roark family Farm and allowing him to kill prostitutes from Old Town. Eventually Roark began sharing in his cannibalistic feedings as well. Kevin not only uses the basement of his home as a hiding place, but as a holding cell for his victims/trophy wall where he hangs the heads of his victims (the only part he doesn't eat).

What isn't finished off by Roark and Kevin is fed to the feral dog they keep as a pet.

That Yellow Bastard

Kevin was at the Farm, where the Roark Junior was torturing Nancy Callahan, sitting out and reading a bible, indifferent to the torture. It implies he was good friends with him, because of his loyalty to his father. However, Kevin doesn't interact when Hartigan shows up and kills Junior.