Patty Fenn is a fictional character from the television series Billions. She serves as the Chief of Staff to Chuck Rhoades, a prominent attorney in the show. Patty is known for her intelligence, strong work ethic, and ability to navigate the complex world of law and politics. In her role, Patty often finds herself balancing the demands of her job with the personal challenges that arise from working in a high-pressure environment. Her character adds depth to the storyline, showcasing the intricacies of loyalty and ambition within the legal system.