UPA is the United Productions of America animation studio. UPA is widely known for their unique aesthetic and animation style. UPA used limited animation and a highly graphic style. It should be known, that UPA did not invent this style of animation, but pushed its boundaries. Their most well known shorts include Gerald McBoing-Boing and the Mr. Magoo series. The studio used still poses and images in their animation, which greatly contrasted the naturalistic fluid motion of studios such as Disney and Warner Brothers. UPA had a great influence on animation in America and was a major contributor to the change needed to bring experimentation and innovation back to American animation.