This SSBB papercraft is Robotic Operating Buddy (R.O.B.), an accessory for the Nintendo Entertainment System who made appearances in the video game Super Smash Bros. Brawl of the Mario game series, the paper model was created by joshua1533. There is also R.O.B.'s Gyro Papercraft available.
You can download this papercraft template here: Super Smash Bros. Brawl - Robotic Operating Buddy (R.O.B.) Free Paper Model Download