the characters were said to be the most advanced ones when the series was first shown in 1996. baxter hobbins slides, which was independent, used 3d motion-capture suits with motion sensors to make animated 3d models so the characters could make the same movements as the actors. these 3d models were wireframe models at first, then skin and clothes were added to them. the lip movements of the characters were done by using the real lip movements of the actors filmed behind a blue screen.