Henry J. Waternoose III, also known as Mr. Waternoose or simply Waternoose, is the hidden secondary antagonist of Monsters, Inc. He is the former chairman of the company, Sulley and Mike's former boss, mentor, best friend, and grandfather figure, and one of Randall's former henchmen.Mr. Waternoose is often thought to be the first film's main antagonist and Randall's former boss. This is not true as Randall drove the plot and had bigger plans. As well, it was once thought that his middle name was James.He is voiced by James Coburn. In Monsters University, Kelsey Grammer was set to voice Waternoose after Coburn's death in 2002, but immediately dropped out.