Lila, an artificial human designated as Humaritt ZZZ, was rescued from captivity under a countess and assigned as the protagonist's field partner. Her origins and early history remain undisclosed, but her existence connects to corporate interests in Humaritt development and recovery.

As a Humaritt, Lila exhibits enhanced physical prowess—superior strength, agility, and reflexes—alongside expert marksmanship with firearms like a Desert Eagle and advanced close-quarters combat skills. Her initial programming restricts emotional expression, manifesting in stoicism, monotone speech, and limited social understanding; she requires instruction on human norms such as bathing, attire, and public behavior.

Through her partnership, Lila evolves from obedient reliance on directives toward emergent autonomy and emotional curiosity. Exposure to other Humaritts introduces concepts like loyalty, desire, and sacrifice, prompting introspection about her identity. She shifts from third-person to first-person speech, begins questioning orders, and expresses personal preferences. This culminates in her defying creator Dr. Ren by asserting her humanity and rejecting programming limitations.

A pivotal encounter with Alpha, a unique male-model Humaritt, leads Lila to adopt a maternal role. Choosing to protect and nurture him, she departs from her partner to pursue an independent path focused on Alpha's upbringing.

Physically, Lila appears as a young woman with rose-colored hair and golden eyes featuring subtly cross-shaped pupils. Her standard attire includes a miniskirt, blouse, and practical boots, with design elements facilitating frequent "panty shots" during action sequences that remain superficial to her narrative role.