This papercraft is Robobot Armor, a pilotable suit of robotic armor that debuted in the action platformer video game Kirby: Planet Robobot (known in Japan as Hoshi no Kirby: Robobo Planet), the paper model is created by Nintendo.
Kirby acquires this suit and dons it after defeating an enemy Invader Armor, or by finding it stowed away in various parts of stages. While inside it, Kirby gains increased endurance, taking less damage from most attacks and allowing him to defeat enemies by jumping on them, and is capable of performing new and stronger attacks on top of that. In addition, the suit is compatible with certain Copy Abilities, being able to 'scan' in enemies in the same vain as Kirby's Inhale, changing in form and function depending on the ability acquired. Minor enemies that do not provide abilities or are incompatible are simply vaporized when scanned. The current mode of the armor is not tied to Kirby's current Copy Ability.
The Robobot Armor is very versatile on top of its modular properties. It can hover, dash, ride on a Warp Star, fit in a Fuse Cannon, climb ladders and grates, carry a Cannon, carry large blocks, cut through or smash large blocks, and unscrew large screws on platforms and bosses. It can also open certain doors that Kirby would be unable to on his own. The armor does appear to have its drawbacks, however. Due to its girth, it is limited in how far it can travel off the ground when not in Jet mode and as such, will need careful maneuvering or out right abandoning in order for Kirby to progress past certain obstacles. In addition, its size means that it cannot fit through certain passages and tubes that Kirby himself would have no problem with. In certain areas, stations appear that allow Kirby to exit the armor and continue on foot. It is not possible for Kirby to exit the armor without these stations, apart from exiting the stage.
You can download the papercraft model here: Kirby: Planet Robobot - Robobot Armor Free Papercraft Download