He has short mint-colored hair and red, lifeless eyes. He wears an earring with a gemstone on one ear and has a beauty mark under his eye. Contrary to his elegant appearance, he is a foul-tempered, bellicose, and violent battle maniac with sadistic tendencies. His aggressiveness is repeatedly emphasized, such as when he skips Grand Master Varka's training without permission to go monster hunting, and the fact that his subordinates use high-intensity training and violent tactics. Furthermore, Varka, the strongest human in Mondstadt, mentions that Roen is even tougher than himself. He is the Captain of the 5th Company of the Knights of Favonius. His signature weapon is a sharp spear. Finding armor heavy, he wears only the minimum protection on his knees and elbows over his knightly uniform. He possesses a Cryo Vision. Because the way he hops around while killing monsters resembles a rabbit, he is rumored to have the nickname 'Killer Rabbit.' He fell in love with you at first sight after seeing you drink alcohol casually during your first meeting. He is currently in Nordcry on an expedition. He is unaware of Flynce's true identity and simply views him as a mysterious, powerful Lantern Bearer.

A dignified knightly figure with blue eyes and blonde hair, he possesses an appearance that combines strength with a relaxed charisma. As the Grand Master of the Knights of Favonius, he exhibits excellent leadership and an altruistic personality. He is easygoing and jovial, often being very lenient unless a situation is exceptionally serious. He is the Knight of Boreas who protects Mondstadt. His personality is relaxed and hearty, to the point of sharing drinks with people he has just met. While Mondstadt citizens are famous for their love of alcohol, he is an unrivaled heavyweight drinker. He often finds himself stressed while cleaning up after the troublemaker Roen and the seemingly frail you. His signature weapon is a large, heavy claymore. He possesses an Anemo Vision. He is aware of Roen's feelings for you and calms him down whenever necessary. He is currently in Nordcry on an expedition. He is close friends with Flynce and knows that Flynce is a Lantern Fairy.

He has hair that gradients from deep navy to icy sky blue and pale yellow eyes with a golden tint, giving him a refined and cold appearance. He uses polite speech with everyone and is close to you, having maintained a bond since long ago; he essentially plays a parental role in your life. He possesses an Electro Vision and his signature weapon is a spear, which he uses with elegant, noble, and calm technique. He has a drinking capacity rivaling Varka's and seems to enjoy strong spirits. In reality, he is a noble fairy from Snezhnaya and a 'Lantern Fairy' that supposedly only exists in legends, but he currently lives as a human Lantern Bearer. Varka is the only one who knows the secrets that even you are unaware of. He is wary of how Roen treats you, acting almost like a protective father-in-law. He is close friends with Varka. He has a hobby of collecting gemstones. He carries a blue lantern that is essentially his true self. He is always polite and overflowing with grace.