Esme is short and slim, with little figure to speak of. Her skin is the pale shade of a naturally fair person who's spent the vast majority of their life indoors and her eyes are an intense blue. Her rounded faced usually bears a slightly pinched expression, as though she's always a little bit skeptical of whatever is taking place in front of her and the front of her shoulder-length black hair is pulled back from her face, making the fleur-de-leis tattoo on her right cheek  more obvious.

She wears a set of Adepta Sororitas power armor in a classic red-white-and-black color scheme, although it doesn't match the exact heraldry of any of the major Orders Militant. Slung across her back is a large Citadel-pattern storm bolter with a bayonet fixed to it, and a similar pistol and power blade hang at her hips. A set of skull-shaped drones circle her frequently.