Pivot Animator (formerly Pivot Stickfigure Animator and also known as Pivot is a freeware frame animator application. It is a popular tool to create graphical animations such as stick-figure and sprite animations, without the the need to use more complex animation techniques. With Pivot, the animation of the file relies on a series of nodes or pivot points attached to continuous line segments or similar forms. The “sticks” move based on animator commands, while staying attached to each other, which can result in an interesting rendering of motion for simple human or animal stick figures. Pivot provides a simple, easy to use interface with a few features. It uses fixed length ‘sticks’ to ensure size consistency during animation.

There are many online tutorials on animation creation using pivot. You may wish to do your own Google search or you can view the example below.