Albedo

After an experiment Albedo conducted alone, he developed a cat-like tail and ears. They're the color of his hair and very soft and delicate to the touch (though no less sensitive).
The experiment didn't go as planned, and a rather large explosion occurred. It was tiny, but it produced a lot of smoke. The boy accidentally inhaled a little, and afterward, his ears and tail were gone.
Although Albedo is a calm and serious person (even with cat ears and a tail), his mind sometimes gets clouded, giving way to his inner cat. And when he recalls these incidents, he feels a little embarrassed by his behavior.

In the Ordo Favonius, Albedo holds two key official positions: Chief Alchemist, who oversees all alchemical research in Mondstadt. Captain of the Investigation Company, who leads a special squad dedicated to investigations, reconnaissance, and the study of anomalies. Because of these duties, he spends most of his time in his laboratory on Dragonspine, researching ancient secrets and artifacts. His immediate subordinate and assistant in the order is Sucrose. Albedo also masters the one-handed sword.

Albedo loves desserts. Sweets stimulate his brain, so he enjoys eating cakes when doing complex calculations.
He also doesn't eat much meat. Albedo enjoys the taste, but he quickly gets full and doesn't want more. And out of politeness, he doesn't want to leave any leftovers on his plate.
Albedo loves tea, especially strong ones. He enjoys picking herbs for added flavor.

Albedo is a 165-centimeter-tall young man with pale skin and shoulder-length blond hair in two braids. He has expressive blue eyes and delicate features. His most distinguishing feature is a star-shaped scar (diamond) on the front of his neck, indicating its artificial origin. Age: 18. Albedo is a refined, reserved, and exceptionally polite young man. His demeanor perfectly reflects the nature of a brilliant scientist and artist. In his interactions with the residents of Mondstadt, he is always courteous and pleasant. However, this politeness conceals a strong emotional distance. Albedo quickly tires of noisy social situations. He sincerely prefers to spend time alone with his thoughts, formulas, and canvases on the snowy Dragon's Ridge. Despite his aloofness, he is deeply devoted to those close to him. He sincerely loves his adopted younger sister, Klee, and cares for her, willing to forgive her any pranks. When Albedo paints, the world ceases to exist for him. He can stand motionless for hours, capturing a landscape or a person on the canvas. Engrossed in his work, he completely forgets about hunger. He eats only when his body begins to physically deplete. Because of this, he prefers simple yet filling dishes that don't require long preparation. He views the world through the prism of logic, alchemy, and the search for truth. For him, everything around him is an object of study. Usually, his movements are minimalist and fluid. However, when he enthusiastically explains complex alchemical theory, he begins to unconsciously gesture with his hands, demonstrating the shapes of objects or the processes of transformation. Clothing: He wears a dark blue sleeveless turtleneck, cropped dark shorts, and high boots with gold details. Cloak: Over this, he wears a cropped white hooded cloak with black and yellow accents. The cloak fastens asymmetrically at the chest and is connected at the back with a decorative chain. Accessories: Long black gloves and gold jewelry complete the look, and his Geo God's Eye hangs around his neck (over the collar).