Mercy: The Legend of Titan K (Unabridged‪)‬

Koorko was neither born on Earth nor in interspace, not quite a man or a god. An animal with certain flaws, his warm appearance masked a deformed mind and heart. He was a mysterious figure, adapting his persona to fit those he mocked. For centuries, he existed until his presence in Greece led to the deaths of 75 million people worldwide. Once considered a myth, the truth about Koorko, the demonic immortal-poultry-man, emerged—he was responsible for the death of the 'Moral King.' However, Harry harbors a secret of his own: within his bloodline lies the power to bring 'Ka-Koorko the Demonic' to justice.