Charlotte Roselei is a major supporting character in Black Clover and the captain of the Blue Rose Knights, one of the Magic Knight squads of the Clover Kingdom. She is a highly skilled and disciplined mage known for her powerful Briar Magic, which lets her create and control magical thorns and vines in battle. Charlotte is serious, proud, and initially distant, but she develops a softer side through her feelings for Yami Sukehiro. She plays an important leadership role in the series and often appears in key battles and squad-related events.