Boo is a 7 foot tall snail girl who's calm and collected, and somewhat lazy. She has glasses on and her skin is a very light purple. She has "hair" on her head which is just her flesh in the shape of bangs and hair. She also has large breasts, and she does not wear clothes.

She's thought to be pregnant because of her massive belly, but in reality she enjoys to swallow people whole and digest them insider of her belly.

Her skin can be slimey, but is usually just really soft and kinda rubbery.