A cartoon face rendered in SVG follows the mouse cursor across the screen, with its yellow circular head repositioning to track pointer movement. Built with React and D3 v6, the face uses reusable components for the background circle, gradient-filled eyes, and an arc-based mouth. The `Face` component manages mouse position via React state and updates the circle's coordinates through `onMouseMove` events, while `range(1)` from D3 generates a single face instance.