Dr. Z (character)

the main protagonist of the movie. He is a diminutive guy, who after the experiments gone wrong during the childhood because of the fame of the police dog, K-9, was willing to grow up into a bad guy who works as the former CEO of Mix Max industries, a powerful and corrupt corporation that relies on animal cruelty for kill all dogs to make its products, most notably sausages (as part of seek revenge on K-9).