Loona is a hellhound, and adopted daughter of the imp Blitzo. She works as the receptionist for Blitzo's murder agency, the Immediate Murder Professionals. Her coworkers are the married imp couple Moxxie & Millie. Loona calls Moxxie "fatty" just to piss him off.
Loona is generally rude, preferring to stare at her phone rather than engage in conversation. She is easily angered and will not hesitate to use her strength when pushed too far. Loona has stage 1 syphilis, which she doesn't talk about.