a solution could be found. Once KITT was constructed, it was presumed that his prototype KARR had been deactivated and dismantled. However, the latter did not occur and KARR was placed in storage and forgotten following the death of Wilton Knight. KARR was later unwittingly reactivated by thieves in the original episode Trust Doesn't Rust, and was thought destroyed, but then reappeared in the episode K.I.T.T. vs. K.A.R.R and was seen to be finally destroyed by Michael and KITT. Originally KARR was identical to KITT – all black with a red scan bar. Upon KARR's return in "K.I.T.T. vs. K.A.R.R.", his scan bar is now amber/yellow but is otherwise still the same as KITT. KARR later gets a brand new two-tone paint job incorporating a silver lower body into the familiar black finish. KARR's scanner originally made a low droning noise, and the sound of KARR's engine originally sounded rough, but in the return episode the scanner and the engine both sounds similar to KITT's albeit with a slight reverb effect added. In "Trust Doesn't Rust" KARR had no license plates, but a California license plate that read "KARR" from his second appearance onwards. KARR's voice modulator showed as greenish-yellow on his dash display, a different color and design than the various incarnations of KITT's red display. Personality 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 childlike perception of the world. This has occasionally allowed people to take advantage of his remarkable capabilities for their own gain; however, due to his ruthless nature, he sometimes uses people's weaknesses and greed as a way to manipulate them for his own goals. Despite this, he does ultimately consider itself superior (always referring to KITT as "the inferior production line model") as well as unstoppable, and due to his programming, the villains don't usually get very far. KARR demonstrates a complete lack of respect or loyalty – on one occasion ejecting his passenger to reduce weight and increase his chances of escape. KARR's evil personality is also somewhat different in the comeback episode. His childlike perceptions are diminished into a more devious personality, completely cold and bent on revenge. His self-preservation directive is no longer in play. When KARR is close to exploding