The Souls of Cinder is the final boss and a significant character in the video game Dark Souls III. It represents the amalgamation of all previous Lords of Cinder, embodying their strength and determination to keep the First Flame alight. This character is a symbol of the cyclical nature of the Dark Souls universe. As the final adversary, Souls of Cinder tests the player's skills and determination, serving as a culmination of the themes of sacrifice and rebirth that permeate the series.