Luca is the leader of a band of prostitutes at Albion. Red-haired and fiercely loyal to her charges, she is romantically linked to the Holy Iron Chain Knight Jerome. When Jerome gave her a necklace of pearls, she divided them evenly among her girls, believing that they could only survive the hysteria of the heretic hunts by eliminating any cause for jealousy.

Luca took in the wayward Casca, calling the mute former Hawk commander Elaine. She covered Casca's face in bandages, pretending that Casca had contracted syphilis.