Nick Offerman Joins Michael Keaton in McDonald's Mogul Biopic (Exclusive)

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Keaton and Laura Dern are already on board.

Nick Offerman has joined the cast of The Founder, The Weinstein Co. and FilmNation's drama detailing the rise of the McDonald's fast-food empire.

Michael Keaton is starring as McDonald’s exec Ray Croc, while Laura Dern will portray his wife in the biopic, which is being directed by John Lee Hancock.

Written by Robert Siegel (Big Fan), The Founder tells the true story of how Kroc, a salesman from Illinois, met Mac and Dick McDonald, who were running a burger operation in 1950s Southern California. Kroc was impressed by the brothers' speedy system of food prep and saw franchise potential. He maneuvered himself into a position to be able to wrest the company away from the brothers and created a billion-dollar empire.

Offerman will play Dick McDonald, a control freak who gave in to pressure from his brother to let Kroc have more control of the business, only to realize too late he was being pushed out. 

Producing are Aaron Ryder of FilmNation alongside Jeremy Renner and Don Handfield via their banner, The Combine.

The Weinstein Co. is releasing the film (it’s set for a Nov. 25, 2016, opening) and is co-financing.

The role is a change of pace for Offerman, who starred for years with Amy Poehler on NBC’s Parks and Recreation and has appeared in movies such as We’re the Millers and 21 Jump Street.

The actor is in for a busy few months as he next appears in the Sundance hit Me and Earl and the Dying Girl, which opens in June, and will be seen in season two of Fargo. His second book, Gumption: Relighting the Torch of Freedom With America’s Gutsiest Troublemakers, hits stores May 26, and he is performing in Summer of 69, a live show he stages with his wife, Megan Mullally (the show makes a stop in L.A. on May 21, at the Wiltern).

He is repped by UTA and Jackoway Tyerman.