Who said "The only joke here is your existence."?

This quote is attributed to Grim.

The only joke here is your existence. - Grim

"The only joke here is your existence."

Grim Humor

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

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

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

"Your pitiful existence amuses me."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."