Real Name: Arnold Etchison
Occupation: Villain
Marital Status: Single
Base of Operations: Gotham City
Height: N/A
Weight: N/A
Eyes: N/A
Hair: N/A
First Appearance: Detective Comics #525
Created By: N/A

A serial killer who was convinced that his family was evil, Arnold Etchison felt that he needed to kill them, and believed that he absorbed something of their life force when he did so. He was apprehended and incarcerated in Arkham Asylum. He escaped when Bane set all the inmates free, and went on to kill several more members of his family. Eventually he was tracked down by Jean Paul Valley, who was acting as Batman at the time.

Valley chased him into a refinery and nearly knocked him into a vat of molten metal. He was hanging from a plank above it, but Valley allowed him to fall to his death. Since Abattoir was holding an innocent man inside a secret, hidden torture chamber at an unknown location, Valley indirectly condemned that prisoner to death.