Probably the most prominent aspect of a stop-motion film is the characters. They are the vehicle for story-telling and arguably the element of the film the audience find most memorable.
Over the years, many different puppet making techniques have emerged that have changed the face of stop-motion animation. These changes can be technical, helpful to the animators or they could simply be artistic changes that allow for new and interesting styles to emerge. Leaps in technology have also helped to merge these into one, creating aesthetically pleasing and easily accessible models.