Actor Jeff Osterhage that plays John Stanton was an original finalist to play the role of the lead Michael Knight.
K.A.R.R.'s voice is described in the script as "a Darth Vader-ish rumble."
K.A.R.R. has undergone several changes since his last appearance. Aside from the now-yellow scanner and vanity "K.A.R.R." license plate, he is also less concerned with his dominant program - that of self-preservation. Here he is out for revenge...
Paul Frees replaces Peter Cullen as the voice of K.A.R.R. Frees apparently is using the same voice he used when he performed as the "Ghost Host" for the Haunted Mansion ride at the Disney theme parks.
K.A.R.R. previously appeared in the first season episode TRUST DOESN'T RUST. Voice artist Paul Frees takes over from Peter Cullen here, and doesn't receive a credit - like William Daniels' K.I.T.T., this trick gives the car an identity of its own.