This paper toy is Madara (called Nyanko-Sensei by Natsume), a powerful Yokai who is Natsume's self-proclaimed "Body Guard", based on the anime series Natsume's Book of Friends (Natsume Yujin-cho), the papercraft created by Sunazuka Falcon. There is also a Madara Cube Craft Paper Toy at the site.
Madara was freed from the shrine he was imprisoned in when Natsume accidently stepped on the kekkai keeping him trapped. Madara declared he would protect Natsume in exchange for the Book of Friends when he dies. Natsume refers to Madara as "Nyanko-Sensei" or just "Sensei" because Madara usually takes the form of a lucky cat statue, which is what he was sealed in inside the shrine. Natsume's friends mistakingly call him a raccoon dog due to his rather chubby appearance as a lucky cat. Most of the Yokai Natsume meets seem to know Madara, and many acknowledge his high power and skill.
Madara is a rather sarcastic and devious Yokai. He loves to go out drinking with other Yokai, and on many occasions he invites them into Natsume's room to have little drinking parties at night. This is why Natsume rarely gets a good nights sleep.
Natsume's Book of Friends is a Japanese fantasy manga series by Yuki Midorikawa. For as long as he can remember, Takashi Natsume has had the ability to see spirits, a power inherited from his grandmother Reiko. Upon her death, Reiko bequeaths to her grandson her Book of Friends, a book containing the names of spirits Reiko had bullied into servitude. The Book of Friends is a highly prized item in the spirit world, and spirits haunt Takashi constantly. Whereas Reiko formed the contracts, however, Takashi spends his time dissolving the contracts and releasing the various spirits that come to him for help. But that doesn't mean there aren't malicious spirits trying to kill him. Which is where Madara comes in; Madara serves as Natsume's bodyguard and spiritual advisor of sorts, even though he is motivated by his own desire to possess the Book of Friends. He later on begins to become more attached to Takashi.
You can download this papercraft model here: Natsume's Book of Friends - Madara Nyanko-Sensei Free Paper Toy Download