Black Sugar Swan Cookie is the tyrant in the Dessert Paradise, using their power over the denizens and "beautifying" them and the paradise to fit their standards, ultimately causing harm and peril in the Dessert Paradise. Once known as Black Sugar Duck, her jealousy of the Sugar Swan’s beauty led her to use Dessert Paradise's Eternal Sweetness to transform into Black Sugar Swan Cookie. With her new powers, she cast the Paradise into darkness, ruling in the Sugar Swan's absence.