A pie chart visualizes the top 10 Tollywood heroes and the number of movies they have appeared in, with each slice color-coded and labeled, alongside a legend showing hero names and raw values. The chart uses D3 v5's `pie`, `arc`, and `scaleOrdinal` to generate the SVG sectors and colors, while `d3.csv` fetches the dataset from a GitHub Gist. Text labels are positioned using `arcGenerator.centroid` to place numbers at the slice centers, and the surrounding HTML/CSS styles the page title and typography.