Lily is a tan ball-jointed doll that lacks a nose, has large oval-shaped eyes with black irises, round ears and blushed cheeks, and a smiling mouth framed by white teeth. She has a long curved eyelash for each eyelid. Her most notable feature is her long vibrant purple hair, which first appears tied into a large chignon-like style and then unfolds into three lengthy braids, with a singular bang hanging out from her forehead. She wears a purple short-sleeved t-shirt and black suspenders with a yellow star embroidered on the front pocket. Her suspenders flow out into a black triangular skirt with white diamond-shaped lining. Lily also wears purple Mary Jane shoes and black over-the-calf socks with white trims; a yellow star is embroidered on each one. While the sock on her left leg is fully extended, the one on her right leg is pulled up to her mid-calf. In dark areas, part of Lily’s hair glows a bright purple while her eyes and teeth glow green. Lily's abilities are largely tied to her long hair, which can move at will and stretch for long distances. As her name suggests, her hair is braided, giving them the appearance of sharp scorpion tails. But instead of stingers, each braid ends in a three-fingered "claw" of hair with which she can grab objects. Moreover, her hair grants her notable strength and agility, allowing her to restrain strong Bigger Body experiments like Kissy Missy, pick up fully grown adults off the ground, destroy steel walkways, and traverse the underground labs with ease. Furthermore, her hair glows purple under UV light and her eyes and teeth glow green in the dark.