Rodney McKay is a fictional character from the science fiction television series Stargate Atlantis. He is portrayed as a brilliant but often arrogant astrophysicist and engineer, known for his expertise in advanced technology and alien artifacts. McKay often serves as the team's scientific advisor, using his intelligence to solve complex problems and develop new technologies. In the series, McKay is played by actor David Hewlett. His character is known for his quick wit and humorous personality, often providing comic relief amidst the show's dramatic moments. Despite his flaws, McKay demonstrates loyalty to his team and a strong desire to protect humanity from various threats.