Who said "I joke only when the outcome is already decided."?

This quote is attributed to Black Manta.

I joke only when the outcome is already decided. - Black Manta

"I joke only when the outcome is already decided."

Black Manta Humor

"The surface world knows nothing of true power. I have seen the depths, and they have made me unstoppable."

"Aquaman thinks he can protect his kingdom. He will learn that no one is beyond my reach."

"Revenge is not a weakness—it is the purest form of justice."

"I was forged in darkness, and darkness is where I thrive."

"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."