Penelope is a supporting character in the anime The Sacred Blacksmith. She is a teenaged attendant and one of the three loyal companions who serve Charlotte E. Firobisher. Alongside her fellow companions, she works to support Charlotte's goal of gaining recognition from her father and being accepted into the emperor's family, a purpose that defines much of her role in the story.

In appearance, Penelope has blue eyes and brown hair cut short to ear length. Although her age is close to that of the other companions in Charlotte's service, she tends to look younger than she actually is. Among the three attendants, she serves as the peacemaker of the group: when the other two companions clash or argue, Penelope is the one who steps in to restrain them and mediate the disagreement, helping to maintain harmony within the group.

Penelope is loyal and dependable in her service to Charlotte, and her motivation is closely tied to her mistress's cause rather than to personal ambition. She is also a capable fighter who wields a ballock knife known as the Demon Sword Assassin, a weapon she uses in her duties as one of Charlotte's attendants.

Because she is a supporting figure, Penelope does not receive a major personal arc; her presence in the narrative is defined by her steadfast loyalty to Charlotte and by her stabilizing influence over the other companions. Her key relationships are with Charlotte, whom she serves faithfully, and with the other two companions with whom she shares a close working bond, balancing their personalities through her calm and mediating nature.