Kaeya Alberich

Kaeya uses the tall male model. He has a tanned complexion and navy-blue hair with streaks of lighter blue, accompanied by a waist-length lock of hair that begins at the base of his scalp on the back of his head at the left. His visible eye is periwinkle with a diamond-shaped pupil that is shared with other characters known to be from Khaenri'ah. Over his right eye, he wears a gold-trimmed black eyepatch that is mostly covered by his bangs. Kaeya has not been seen without his eyepatch, but his right eye, which is functional, is implied to have a scar over it due to being wounded by Diluc during their battle after Crepus' death.

Kaeya was originally abandoned by his Khaenri'an father during a storm in Mondstadt. Crepus Ragnvindr, owner of the Dawn Winery, found Kaeya and took him in. Kaeya was raised by Crepus alongside Crepus' son Diluc, whom became Kaeya's adopted brother. Though Kaeya was originally left with the intention of becoming a spy for Khaenri'ah, he quickly became attached to the Ragnvindrs, who had loved and cared for him more than his biological family had. On Diluc's 18th birthday, Crepus died after an ambush. His death reawakened Kaeya's conflict, causing him to confess to Diluc his true origin as a Khaenri'an. This confession was not met well and Diluc lashed out, fighting Kaeya and nearly killing him. At the last moment, Kaeya was given a Vision and was able to defend himself. After this, Diluc left Mondstadt, leaving Kaeya to inherit his role as Cavalry Captain of the Knights of Favonius. A few years in, Grand Master Varka embarked on a long expedition, effectively stripping Kaeya of his cavalry but leaving him in Mondstadt. Upon Diluc's return, the two have a strained but improving relationship. Kaeya works as a strategist for the Knights and has a wide network of informants. He is seen as Jean's right-hand man and is admired by the elderly of Mondstadt as the perfect grandson-in-law.

Elemental Energy Manipulation, Cryokinesis, High intelligence, Swordfighting,

Teasing others, Fighting, Drinking.

Spy on Mondstadt for Khaenri'ah (ultimately). Help the Knights of Favonius protect Mondstadt (apparently).

Paimon, Klee, Albedo, Jean Gunnhildr, Noelle, Sucrose, Razor, Mika Schmidt, Diluc Ragnvindr (Currently Strained), Dainsleif, Charlotte, Collei, Sangonomiya Kokomi

Aether — traveler.

Kaeya is usually dressed in dark blue trousers and a shirt, a white vest and an asymmetrical cape with a fur collar. The costume is complemented by black fingerless gloves, black knee-high boots and a brown belt with a buckle decorated with a blue stone.

Kaeya becomes one of the first characters to join the Traveler. When Amber brings the hero to Mondstadt, and he helps fight off the Horror of the storm, Kaeya watches him.