In the new film, Arnold plays a farmer who struggles to help his teenage daughter (Abigail Breslin) after she becomes infected by a disease that slowly turns people into zombies.
While the action star has made fans all over the world, his biggest fans may have grown up in his house.
Arnold's son Patrick Schwarzenegger has caught the acting bug and is now following in his dad's footsteps.
"For a father, you always love when your children try to do the same thing that you do, because that means that they really enjoy and appreciate your career and they want to do the same thing," said Arnold. "Now he is getting into the movie business. He has gotten some great parts already."
Patrick, 20, has appeared in The Benchwarmers, Stuck in Love and Grown Ups 2.