A robot is a virtual or mechanical artificial agent, usually an electro-mechanical machine. Robots is a 2005 American 3D computer-animated science fiction dystopian comedy film produced by Blue Sky Studios for 20th Century Fox, and was released theatrically on March 11, 2005. The story was created by Chris Wedge and William Joyce, a children's book author/illustrator. Originally developing a film version of Joyce's book Santa Calls, Joyce and Wedge then decided to develop an original story about a world of robots. Joyce served as producer and production designer for the film.