Who said "Thank you for the corpses you have created for me."?

This quote is attributed to The Night King.

Thank you for the corpses you have created for me. - The Night King

"Thank you for the corpses you have created for me."

The Night King Gratitude

"The living are not my concern."

"Death is the enemy. And we are joining the fight against it."

"Winter came for House Umber."

"I am the night."

"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"