Lady is a human Devil Hunter who first appeared in Devil May Cry 3: Dante's Awakening as both a supporting character and boss. She is the daughter of Arkham and sought to hunt him down, encountering Dante in the process. After the events of Devil May Cry 3, she joins Devil May Cry. While her preferred name, "Lady", was given to her by Dante, her birth name is Mary. Her original name, Mary, was given to her by her father Arkham, but she chose to renounce that name when he murdered her mother. Dante first called her "lady" when she refused to tell him her name. She has differently-colored eyes. While still a normal human, she is also an exceptionally skilled firearms expert and extremely acrobatic in close quarters combat. Her most powerful weapon is the Kalina-Ann, a customized missile launcher similar to a MANPADS. In the anime, voiced by Fumiko Orikasa, she works as a solo devil hunter but sometimes calls on Dante for jobs, and sometimes money that he owes her.

Devil May Cry
Devil May Cry follows the story of the demon hunter known as Dante. As a half demon, half human, he uses his trusty sword Rebellion and his two guns Ebony and Ivory to take on missions. Dante owns and runs "Devil May Cry," a business that specializes in hunting and killing demon-related problems.