The movement was pioneered by Pablo Picasso and Georges Braque, joined by Jean Metzinger, Albert Gleizes, Robert Delaunay, Henri Le Fauconnier, and Fernand Léger. One primary influence that led to Cubism was the representation of three-dimensional form in the late works of Paul Cézanne.
They wanted to see art in many others ways then the same stuff, i hope this helps!