Billie Corneja is a pink-haired, blue-eyed Anthro pig, with a distinctive pattern of black, beige and orange fur. She is the primary fursona of Nocturn3 (aka GreatNocturn on FA).

Billie is best known for her (Fem)Suiting / Masking / Kawamono fetish, frequently dressed up in full-body costumes for any number of erotic thrills: disguised as other fursonas, cosplaying famous Furry heartthrobs, or roleplaying her own alter-egos (e.g. Gallina the gryphon, Paula the human nurse).

Though canonically female, Billie is often mistaken for (and TWYS as) a femboy or andromorph due to her flat chest and pear-shaped figure. Far from correcting anyone, Billie gleefully leans into the misconception, wearing boyish clothes when out of costume.