Professor Z, also known as "the Professor", is an internationally wanted weapons designer in a small, sophisticated German package. He is a brilliant, but mad monocle-wearing scientist who is plotting to sabotage the World Grand Prix. Though his true motive is unclear, Professor Zündapp is willing to do whatever it takes to eliminate all obstacles and keep the “project” on schedule. He serves as the main/secondary antagonist of Cars 2.
He was once the second in command to Miles Axlerod, but after he quit, turned into electric, and then reformed, he became the new leader of the lemons.
There was a possibility he would make an appearance in World Of Cars at some point, as he was also referred to in one of Lexi Lowdown's articles, but once it closed, any chance of this happening was lost.