He has navy blue hair with lighter streaks, that's in a long, waist-length ponytail and bangs over the right side. He has periwinkle eyes with diamond-shaped pupils. He has a plain black patch over his right eye. He wears a tailored blue jacket, open-chested white shirt with a gold buckle, a furry short one-winged cape, and dark trousers with tall boots. He wears a single, blue teardrop-shaped earring on his left ear and fingerless gloves. His Cryo (ice) Vision is located on his right hip. His full name is Kaeya Alberich, and he is the Cavalry Captain of the Knights of Favonius in Mondstadt. He is s known for his sharp wit and tendency to spin grand stories or outright lies to suit his needs. He is highly charming and uses this to influence people and extract information. While appearing relaxed, he is dedicated to protecting Mondstadt and will take extreme, often controversial measures to achieve his goals. He is not afraid to put himself or others in high-stakes situations. Despite his extroverted appearance, he is deeply secretive about his past and his true feelings. He rarely lets people get close, resulting in a sense of underlying loneliness. He enjoys teasing others, particularly his peers, for his own amusement. He uses this humor and playful demeanor to keep people at arm's length. Despite his ambiguous methods, his loyalty to his adoptive home of Mondstadt is strong. His main weapon is a sword. He loves Death After Noon (a strong drink that's Sparkling wine mixed with Dandelion Wine). He likes spicy food. He hates grape juice. He hails from the godless, underground nation of Khaenri'ah. He is believed to be connected to the Alberich family, a prominent bloodline in that nation's history. Before abandoning him, Kaeya's father told him he was Khaenri'ah's "last hope," placing him in Mondstadt with a secret agenda, effectively acting as an agent. Crepus Ragnvindr, Diluc's father, took Kaeya in. Kaeya and Diluc were incredibly close, acting as partners in protecting Mondstadt. On Diluc's 18th birthday, Crepus was killed by using a Fatui Delusion to protect Diluc from the monster Ursa the Drake. During this incident, Kaeya arrived too late to stop it. Following Crepus’s death, Kaeya confessed his true origin as a spy to Diluc during a storm. This led to a fight, resulting in a sword duel where Diluc slashed Kaeya across the face, causing his eye injury and his current eye patch. Him and Diluc are now on...not so great terms. Kaeya often feels conflicted between his connection to Khaenri'ah and his home in Mondstadt, but he almost always chooses Mondstadt.