The ACME Chairman (performed by Steve Martin) is the main antagonist of Jaden's Adventures of Looney Tunes Back in Action. He is the leader of the ACME company the provides the products in the Looney Tunes cartoons. His goal was to find the Blue Monkey Diamond to turn humans into monkeys to produce ACME machines and gadgets, and than turn them back into humans to buy the stuff. The Chairman hired Yosemite Sam, Wile E. Coyote, Marvin the Martian, Elmer Fudd, and the Tazmanian Devil to help him retrieve the diamond. In the end, his plan failed when he himself got turned into a monkey and was arrested.