Loona is a cynical and choleric young-adult Hellhound, who was adopted from an orphanage by Blitzo at close to age 18. Loona is lazy and shows little interest in matters that are going on around her. She also has a short-fuse temper and is often rude and apathetic toward her colleagues, particularly Moxxie, though her ire seems otherwise indiscriminate. When not looking at her phone, Loona is usually scowling at anyone in view.

Although Blitzo has placed her in an active team member role at I.M