Incorrect thylacine anatomy I know, but I tried

Abraham is a cursed being, put to the task of cleaning up humanity by eating human souls and hearts that are soaked in the blood of the innocent. He made a deal with fate as he was rotting in his death and rage at humanity, his wounds were healed and his flesh fused with his exposed bones.
He can live forever but must continue to consume evil or he will turn to dust, not to mention the evil will eventually corrupt him and make some stuff happen that I haven't figured out yet.

Art and character belong to me