Professor Zundapp (or Professor Z) (voiced by Thomas Kretschmann) is the secondary antagonist in Jaden's Adventures of Cars 2. He is a dangerous weapon designer, and another Lemon (car that doesn't work well). He joined a bunch of other Lemon cars to get the respect that he wanted.His boss (Sir Miles Axelrod) wanted to make an alternative fuel look bad so that everyone would go back to using gas, which the Lemons owned. However, Jaden and Mater foiled their plans.
- Even though he's not the true villain of the movie, Jaden considers Zundapp more of threat to him than his boss.
- Professor Zundapp will become Jeffrey's enemy in Jeffrey & Friends' Storm Adventures of Cars 2.
- Professor Zundapp will return for revenge in the Jeffrey, Jaden & Friends meet Indiana Jones saga.
- Professor Zundapp will return in Jeffrey, Jaden, Hiccup & Friends meet Valiant.