This cube craft paper toy is a chibi Wolf Link, an alternate form of Link, which he transforms into in The Legend of Zelda: Twilight Princess, the papercraft was created by scarykurt. When Link enters an area shrouded in Twilight, he transforms from his normal Hylian form into a sacred beast. As a wolf, Link is unable to use items, but gains enhanced senses. In this form, Midna can ride on his back to assist in combat and open certain doors. Interestingly, Midna is visible in Wolf Link's shadow even when she is not riding on his back.
Most human and Hylian characters in the game react with fear to Link's wolf form. Exceptions to this include Coro, Jovani, Ashei, Agitha, and Iza. The Postman is not only unafraid, but even recognizes Link in wolf form. Interestingly, Queen Rutela also seems to recognize that Link is actually a Hylian, during his first visit to Zora's Domain after thawing it out. Even Epona is capable of deducing Wolf Link's true identity, whether she saw the transformation or not. Many other animals give hints that they know who Link really is.
Link is first transformed into the Wolf following the appearance of Bulblins at Ordon Spring. Colin and Ilia are carried off, and Link is left lying unconscious in the Spring. When he awakes, Link runs in pursuit of his kidnapped friends, but finds a barrier of Twilight blocking his path. Suddenly, the massive arm of a Shadow Beast springs from the Twilight, dragging Link inside. As the Shadow Beast clutches Link around the neck, the mark of the Triforce suddenly appears on the back of his hand and bursts forth pure light, driving the creature back. Link falls to his hands and knees and morphs from human to wolf, causing him to pass out from the strain of the transformation. He is then dragged off by the Shadow Beasts and imprisoned within the sewers of Hyrule Castle, where he will meet Midna who helps him make his escape.
It is later revealed that anyone engulfed in the Twilight will normally be transformed into a helpless Spirit, and that only the power of the Triforce protects Link and enables him to retain his physical form, although considerably altered. Link will eventually be able to return to his human form with the aid of the Light Spirit Faron. Upon entering the other provinces of Hyrule covered in Twilight, Link will again be transformed into Wolf form, being able to once more regain his human form after aiding the Spirits of Light by restoring light to the area.
A significant turning point in terms of the transformation comes when Link finds the Master Sword and receives the Shadow Crystal. With this artifact, he is able to change at will by exposing himself to the power of Twilight contained within the crystal by simply talking to Midna. [Source: zeldawiki]
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