Origin and background
KARR is the prototype version of KITT, originally designed by Wilton Knight and built by his company Knight Industries. Upon completion of the vehicle, KARR's CPU was installed and activated. However, a programming error made the computer unstable and potentially dangerous. The project was put on hold and the car was placed in storage until a solution could be found.
Unlike KITT, whose primary directive is to protect human life, KARR was programmed for self-preservation, making him a ruthless and unpredictable threat. He does not appear as streetwise as KITT, being very naïve and inexperienced and having a child-like perception of the world. This has occasionally allowed people to take advantage of his remarkable capabilities for their own gain. Despite this, he does ultimately consider himself superior and unstoppable and due to his programming, the villains don't usually get very far. KARR demonstrates a complete lack of respect or loyalty, going so far on one occasion to eject its driver to save weight and increase its odds of escape.