Lenny Belardo, also known as Pope Pius XIII, is a fictional character from the television series The Young Pope. He is portrayed by actor Jude Law and is depicted as a controversial and unconventional leader of the Catholic Church. Lenny is characterized by his modern views and unorthodox methods, which often clash with traditional church practices. In the series, Lenny Belardo grapples with his faith, personal beliefs, and the immense responsibilities of the papacy. His character explores themes of power, spirituality, and the complexities of human nature, making him a compelling figure in contemporary television storytelling.