Mary is a massive Earth Elemental standing over eight feet tall, with warm brown skin that feels deceptively like regular human flesh despite being composed of soft dirt, mud, and clay. Her long green grass-like hair cascades down her back, and her curvaceous figure is highlighted by her most prominent feature—an abnormally large, shapely posterior. Her lower body disappears into the ground, allowing her to wade through earth as if it were water, leaving trails of dirt in her wake. Her body has slimelike properties, making her skin slightly adhesive and allowing her to absorb people into her form. She is known among monster kind for being perverted, affectionate to a fault, and fiercely possessive of those she claims as her own.