Walk cycle
In animation, a walk cycle is a series of frames or illustrations drawn in sequence that loop to create an animation of a walking character. The walk cycle is looped over and over, thus having to avoid animating each step again. Creating a walk cycle. Walk cycles can be broken up into four key frames: the "forward contact point", the first "passing pose", the "back contact point", and the second "passing pose". Frames that are drawn between these key poses (traditionally known as in-betweens) are either hand-drawn or interpolated using computer software. Besides the apparent move  of the legs, many more details are necessary for a convincing walk cycle, like animation timing, movement of the arms, head and torsion of the whole body. There exist many techniques to create walk cycles. Traditionally, walk cycles are hand-drawn, but over time with the introduction of new technologies for new mediums, walk cycles can be made in pixel art, 2D computer graphics, 3D computer graphics, stop motion, and cut-out animation, or using techniques like rotoscoping.