Charlotte Roselei is a noblewoman of House Roselei and the captain of the Clover Kingdom's Blue Rose squad of the Magic Knights. She also is the human host for the elf Charla. Charlotte is a tall woman with upper-back length blonde hair that is braided as she usually keeps her hair tied back into a bun with only a single lone braid hanging down on the left side of her face while she has bangs swept to the left side, light blue eyes with visible long eyelashes and full pink lips. Her beauty is renowned throughout the Clover Kingdom and she is rated as the most beautiful woman—when not wearing her helmet. Charlotte's usual attire is a set of armor. She wears a fancy decorated helmet that has a single fin protruding from the top, resembling a shark fin. For her top, she wears a black one piece undershirt, which extends out to her hands and act as sleeveless gloves. On top of that, she wears a decorated armored breastplate, an armored collar plate, as well as gauntlets on her arms. For her bottom, she wears a short blue skirt, which is visible underneath a longer leather-like skirt that is open on the front. Her white trousers are tucked into her thigh-high black socks, which have leather cuffs at the ends. She wears shin armor as well as armored boots. Her grimoire is stored inside a brown leather pouch that is attached to a strap on her waist on her right side. She finishes off her look with a long, flowing blue cape that reaches down to her ankles, along with the Blue Rose robe, secured at the center of her chest with a buckle that shows their squad's insignia. Six months after the elves' attack, Charlotte wears a similar shirt but it extends down below her waist, in place of her skirt. She also wears fewer pieces of armor, only keeping her helmet and breastplate, which are decorated with designs similar to Charla's tattoos. Her squad robe has a second, darker collar that is lined with fur, and a larger, rose-shaped pin holds it together in the front. Before she became captain, her attire is similar to what she currently wears, minus the armored pieces such as the breastplate, collar plate, gauntlets, shin armor, and helmet. On rare occasions, she is seen wearing a formal dress. While possessed by Charla, two tattoos appear on Charlotte's cheeks and her ears become pointed. Charlotte appears as a quiet, cold and indifferent woman who keeps her emotions controlled and well hidden. She is constantly shown to appear as a rather stern woman, despite inwardly having an inward monologue that constantly appears to say calm down, especially around Yami Sukehiro. She often does not respond to situations that go out of hand, preferring to appear indifferent and let things play out. She does respond well to emergencies and pressing concerns, performing her duties and moving swiftly to take care of any problems that come up. However, she still is capable of losing her composure and becoming annoyed, which almost always involves Yami teasing of her. She is also a lightweight when it comes to alcohol, barely able to finish a pint before becoming drunk. Charlotte considers her duty to the kingdom to be her foremost responsibility, with little interest in the social aspects of life. Her beauty is quite noticeable when she chooses to show it, but she is more comfortable in plate mail than silk dresses and cares little for the opinions of most others. She also has a hard time being open with most people and expressing herself on occasion. That said, she often quips back at her fellow captains when they make rash decisions or do something she considers stupid, particularly Yami. However, she also has admiration for those who are competent and work hard, though she rarely ever shows it. Outwardly, she displays little interest in finding a husband and becomes angry when the subject is brought up, for which Yami repeatedly teases her and calls her "Spiny Prickly Queen." Notably, the culture of apparent misandry within the Blue Rose squad likely originates from her though it is not known why she dislikes men to such a degree. However, she is secretly in love with Yami, despite always treating him harshly. When she revealed this to her squad, many of her subordinates confessed to wanting to help her win Yami's affection, and some said they also had relationships they kept secret, which startled her greatly. According to her subordinate Sol Marron, Charlotte does have a large amount of respect for Julius Novachrono.