These are the battle robot papercrafts from shindoh, the robots are designed in such a way that you can fit one of those mini electric motors that you often see in RC toys. The motors don't really make the papercraft bots walk but instead vibrates and shakes to make it move.Moving Battle Robot Papercrafts [Download]
Frobot Papercraft [Related Posts]
Make Your Own Newsbot Papercraft
Clank Papercraft Robot
WALL-E Papercraft Robot
Super Robot / Mecha Anime Papercraft