The Master Control Program (or MCP) is a fictional character and the main antagonist of the 1982 science fiction film Tron. It was a rogue computer program and rapidly-developing artificial intelligence that ruled over the world inside ENCOM's mainframe computer system, originally created by Walter Gibbs and vastly improved by Ed Dillinger. During the rule of the MCP, many programs were enslaved and pitted against the program's henchmen and lieutenant, led by Commander Sark. The MCP was originally a chess game program, which was left embedded in the company's computer systems until it was rewritten by Dillinger to administer the company's network years later. However, it had the capacity to learn and grew beyond the confines of its original programming where the MCP started to steal data from other systems, and took control of several companies and institutions. The MCP's intelligence and ambition grew nearly out of control, and it grew to desire nothing less than world domination, boasting that it could run things from 900 to 1,200 times better than any human.