Who said "I am grateful only to myself for my greatness."?

This quote is attributed to Hulk King.

I am grateful only to myself for my greatness. - Hulk King

"I am grateful only to myself for my greatness."

Hulk King Gratitude

"I am the king of this place. What are you?"

"Strongest one there is, that's what they call me."

"You are strong. For a small person."

"But I am strongest one there is!"

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"