Wolf Link (Japanese: ウルフリンクUrufu Rinku) is the form Link takes when he comes in contact with Twilight in The Legend of Zelda: Twilight Princess. In this wolf form, he fulfills a Twili prophecy, in that a divine beast would free them from the realm in which they reside. While Link is not able to use the items he is capable to in his normal Hylian form, his wolf form grants him heightened senses and speed. In this form, Midna is often seen riding atop him; giving him directions and enabling him to warp through Twilight Portals.
In this form, Link takes the appearance of a primarily dark grey wolf, with light grey markings and underbelly. While he does not retain many of his Hylian features, he does retain his blue eyes, earrings, and the mark of the Triforce of Courage on his paw. Around Link's front left leg he wears a shattered shackle, a remnant of when he was initially freed from his prison in the Hyrule Castle Sewers by Midna.
Wolf Link appears as Link's Final Smash in Super Smash Bros. Emissary. The trophy of him reads: "When the hero of Hyrule, Link, was turned into a wolf by Zant using a powerful crystal, Midna rode him until he could exert this form no more." Appearances- Wii: Twilight Princess.
An amiibo figure of Wolf Link exists! For more info about this amiibo, see this page.