Nian, also known as the Black Dragon, is one of the five Dragon Sisters from ancient Yan legends, embodying unfettered freedom. As a Defender Guard Operator in Arknights, she wields immense strength and defensive capabilities with her dragon arts. Playful and rebellious, she rejects rigid traditions, preferring a nomadic life of adventure and revelry. Despite her wild nature, she deeply cares for her sisters and occasionally aids Rhodes Island. Her Unfettered Freedom skin highlights her vibrant, liberated spirit in festive attire.