Use the slider to change the head. Do not press c. (or do it I don't care) Click the head and drag it around. Use arrow keys to move him to. Something cool to try: Press and hold the up arrow key, and click outside of the project box at the same time. Watch what happens! Your head sticks to the ceiling and becomes a magnet! Try it with other keys to! Dont press the arrow keys after doing this or it will stop the trick.
Thanks to @Phinatt for SOME of the rag-doll script.