Are you’re squeamish about what’s beneath human skin? If so the body art illustrations of Quirk might be hard to view. He uses liquid latex, acrylic paint, and Sharpies to render people’s “interiors on their exteriors”.
As a master illustrator he carefully depicts muscle, bone, veins, arteries, nerves, very similar to what you’d see in a Physiology class or a Grey Anatomy book.
Each model is used as a canvas revealing multiple layers of anatomy, it appears as if their bodies were peeled and sliced open.