Hieronymus Bosch was a Dutch painter from the late 15th and early 16th centuries, known for his fantastical and often surreal imagery that challenges moral and religious conventions. His works are characterized by intricate details, vibrant colors, and complex iconography, making him one of the most innovative artists of the Renaissance period. Bosch's art often reflects themes of sin, human folly, and the nature of evil, leaving a lasting influence on both contemporary and later artists.