The Big Bang Theory characters have various IQ scores, demonstrating their unique strengths and weaknesses. Sheldon Cooper's mom, Mary, has an IQ of 95. Her simple yet intelligent nature is vital in dealing with Sheldon’s quirky traits from youth to adulthood. Stuart Bloom, Sheldon’s friend with an IQ of 100, lacks business acumen despite adept comic book knowledge. Geologist Bert Kibbler has an IQ of 110, despite being easily confused. Penny, portrayed as a non-scientist, possesses an IQ of 110 due to her quick learning ability and emotional intelligence. She outshines her scientist friends in social situations. Leonard Hofstadter’s unpleasant psychologist mother, Beverly, possesses an IQ of 120. Sheldon’s rival, Howard Wolowitz, boasts an IQ of 140 despite Sheldon calling him the least smart of the group. His wife, Bernadette Rostenkowski-Wolowitz, an uncompromising drug developer, has an IQ of 160. Barry Kripke, Leonard Hofstadter, Raj Koothrappali, Amy Farrah Fowler and Sheldon Cooper have impressive IQs ranging from 170 to 187, indicative of their high intellect and contributions to their respective fields.