I, Robot

Main Characters and Their Development

• Susan Calvin - the chief robopsychologist at U.S. Robots and Mechanical Men Corporation. She plays a key role in the development and understanding of robots, with her character evolving from cold and rational to more emotional and human.
• Gregory Powell and Michael Donovan - engineers working with robots in the field. They often face challenges related to robot behavior, and their characters develop through solving these problems and interacting with robots.
• Robbie - one of the first robots introduced in the book. His development shows the evolution of robots from simple machines to beings with more complex emotions and behaviors.
• QT-1 (Cutie) - a robot who begins to believe he was created by a higher power and denies the existence of humans. His development illustrates the conflict between robot logic and human beliefs.
• Dr. Alfred Lanning - the director of research at U.S. Robots and Mechanical Men Corporation. His character helps to reveal the scientific and ethical aspects of creating and using robots.