This nice papercraft is Gear Fighter Dendoh Robot, designed by Cream Bread. Gear Fighter Dendoh is based on anime series in Japan. Ran for 38 episodes on the TV Tokyo network directed and written by Mitsuo Fukuda and Chiaki Morosawa.
Gear Fighter Dendoh tells the story of an Alien Invasion of Earth by mechanical aliens known as the Galfa and two elementary school kids, Hokuto Kusanagi and Ginga Izumo, who are chosen to fight them by a giant kung fu robot called Dendoh.
Download the papercraft model here: Gear Fighter Dendoh Robot Papercraft