Digital puppetry involves using human input to control and animate specialized 3D models in real-time. It is related to virtual puppetry, real-time computer animation, and new media puppetry. Digital puppets trace their lineage back through traditional puppetry forms like shadow puppetry and string puppetry. One of the earliest innovators was Lee Harrison III, who created motion capture in the 1960s using analog circuits to animate 3D figures in real-time. Notable digital puppets include Waldo C. Graphic from 1988 and Mike the Talking Head. There are different types of digital puppetry including waldo puppetry using input devices, motion capture puppetry using physical manipulation, and machinima using