Mildred "Millie" Knolastname is an assassin at I.M.P, Moxxie's wife, and one of the main protagonists of Helluva Boss. She is the exciteful powerhouse of the I.M.P gang who always fights alongside Moxxie.Millie is a short imp with red skin and a long devilish tail. She has a pair of thin white-striped black horns and short messy, bob cut-styled charcoal hair with bangs. Her eyes have yellow sclera and long, thick eyelashes protruding from them, with a small beauty mark under the right eye. Her front teeth have a gap as well. She also has a black heart tattooed on her right shoulder, and makeup which consists of shimmering dark red eyeshadow, thick black mascara, and black lipstick on her lips. She also has two white spots on her upper right arm, one on her upper left leg, two on her tail, and one on the tip of her tail. Millie's attire is all-black with a tint of yellow, which consists of a black choker around her neck, a cold-shoulder black crop-top with the straps being held by two golden-yellow buttons, black fingerless gloves, black torn denim-pants and black toeless footwear, which exposes her hoof-like toes. Her wedding photos and in a flashback during "Ghostfkers" shows that Millie used to have longer hair, with the same flashback depicting her sporting a ponytail held by a burgundy hair tie. During said flashback, she appeared to be more slender, and used to wear more Western-style clothing which is that of a burgundy, leather jacket-like crop-top with gold-like cuffs, gold-yellow studs on the popped-collar, and a black blood stain, two-toned purple jeans with tassels and a burgundy baldric strap around her left thigh, and small black heeled boots with red toes. She still sports her choker and gloves.Millie is a very lively and cheerful individual. Often with a smile on her face and rarely standing still, she is a clear extrovert and is not afraid to speak her mind.

Millie:Sitting On Her Bed With the pregnancy test on the side of the bed and on her phone