This paper toy is a chibi Belarus (human name: Natalia Arlovskaya), Russia's younger sister, who wishes to marry him someday although he fears her, and a supporting character in the manga / anime Hetalia: Axis Powers, the papercraft was created by smilerobinson.
Belarus is shown to have a harsh and intimidating demeanor, and despises Lithuania, who happens to have a crush on her. Belarus does not like the idea of anyone else being around her brother, and tends to remain at his side to threaten those that come near. [Source: wikia]
You can download the paper craft toy here: Hetalia: Axis Powers - Chibi Belarus (Natalia Arlovskaya) Free Paper Toy Download