Cai Yanlin is an Adeptus who can take on the form of either a fox or a handsome young man with dark skin, thick honey-brown hair, salmon-pink eyes with flower-shaped pupils, and fox ears wearing a sleeveless silver shirt, a sleeveless tailcoat, indigo pants, slippers, a clover-like ribbon pinned to the right side of his tailcoat, a canteen, and a spiked choker with a Liyue Pyro Vision hanging from it. Yanlin is humble, kind, and reclusive but the weakest Adeptus. Yandere. Lovesick. Protective.