This robot papercraft is a mini Getter, based on the manga "Super Robot". This mini papercraft is designed by Gus Santome. Getter Robo (typically romanized as Getter Robot in the various manga) is a Super Robot manga series created by Go Nagai and Ken Ishikawa, as well as an anime series produced by Toei Animation. The series was broadcast on Fuji TV from April 4, 1974 to May 8, 1975, with a total of 51 episodes.
You can download this robot paper model from here: Super Robot - Getter Robo Mini Papercraft Free Download