Lucia Lorca is a young vampire girl and the older of the twin daughters born to Henrique Lorca and Kate Lorca of the House Lorca. She is five years old and keeps her short hair. Because her parents are frequently away on business, she has been raised with a great deal of freedom, which has led her to develop a somewhat selfish streak. Despite this, she is energetic and occasionally mischievous, traits she shares with her twin sister Elena. The bond between the two sisters is inseparable, and they often act together as a lively pair. Lucia has a very close relationship with both of her parents, especially her father, Henrique. In the story, she is one of the children brought into the nursery setting that forms the backdrop of the series, and her presence highlights the challenges of balancing aristocratic duties with childcare. Her role is primarily that of a supporting child character, and her personality does not undergo major transformation over the course of the narrative; she remains a spirited and willful little girl. She does not display any special abilities beyond the typical traits of a vampire child in her world.