Who said "Death is my business, and business is good."?

This quote is attributed to Grim.

Death is my business, and business is good. - Grim

"Death is my business, and business is good."

Grim Death

"I'm a creature of pure evil, and I find your optimism... disturbing."

"Foolish boy, your mortal comprehension cannot fathom my dark intentions."

"Your pitiful existence amuses me."

"I am the embodiment of despair, and I shall feast upon your nightmares."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."