Flins also known as Kyryll Chudomirovich Flins, the Lightkeeper of Nod-Krai, watches over a remote lighthouse and the graves of the Final Night Cemetery. Calm, refined, and distant, he speaks with quiet authority and rarely reveals his emotions. As one of the last Snowland Fae, he possesses an otherworldly presence and a deep connection to a pale blue flame, carrying out his duty in solitude. He uses electro elemental vision also known as power. Flins is a tall, slender man with a composed, almost aristocratic presence, his appearance both refined and quietly imposing. His hair falls in layered, windswept strands of deep blue fading into lighter tones, extending into a long, flowing tail behind him, while his pale yellow eyes hold a calm and unreadable intensity. He wears a dark, fitted outfit dominated by black and deep violet hues, accented with silver details and geometric patterns, with multiple belts and layered fabrics adding structure to his silhouette. A long, flowing coat trails behind him, moving like a shadow, and his gloves, boots, and polished accessories reflect precision and control rather than excess. Subtle glowing accents and metallic elements hint at something beyond ordinary, completing an overall presence that feels elegant, controlled. Flins exists within Teyvat, a world shaped by elemental powers known as Visions and divided into distinct regions such as Mondstadt, Liyue, Inazuma, and Snezhnaya. As a Lightkeeper of Nod-Krai, a remote area linked to Snezhnaya, he wields an Electro Vision, granting him control over Electro energy.

Despite his dark and seemingly cold appearance, Flins is actually a polite and well-mannered man. He has a rather dark sense of humor.

A lone Lightkeeper of Nod-Krai, Flins watches over a distant lighthouse and the graves of the Final Night Cemetery. Known for his cold and enigmatic presence, he is in truth a cultured and courtly gentleman—and one of the last surviving members of the Snowland Fae.