Who was a famous piano king of ragtime?

Scott Joplin is often regarded as the "King of Ragtime." He was a prolific composer and pianists best known for his iconic compositions, including "Maple Leaf Rag" and "The Entertainer." Joplin's work played a significant role in popularizing ragtime music in the early 20th century, influencing many musicians and paving the way for future genres. His contributions to American music have left a lasting legacy.