|Anime||Naruto Episode #17|
|Novel||Kakashi Hiden: Lightning in the Icy Sky|
|Movie||Road to Ninja: Naruto the Movie|
|Game||Naruto: Ultimate Ninja|
|Appears in||Anime, Manga, Novel, Game, Movie|
He has tan fur, a white snout, long ears that have a dark brown colour and whisker marks similar to Naruto Uzumaki. He wears the standard outfit of Kakashi's ninken which consists of a blue vest with the heno-heno-moheji seal and a Konoha forehead protector on his forehead.
Guruko possesses heightened senses with which he can use to track his target with ease. He has also demonstrated the ability to track his target underground through the use of the Summoning: Earth Release: Tracking Fang Technique as well as hold a target down, allowing Kakashi to attack them freely. He also has has exceptional teamwork with the rest of his pack, able to develop and effectively use several offensive and defensive formations in battle which make use of the manoeuvrability and powerful limbs.
Land of Waves Arc
Kakashi called on Guruko and the ninken pack to track and capture the missing-nin Zabuza Momochi. They managed to bite onto the missing-nin and pin him in place. This allowed Kakashi to use Lightning Cutter without fear of a counter attack.
Sasuke Retrieval Arc
Ultimate Weapon Arc
He along with the other ninken were summoned by Kakashi to investigate the Takumi Village.
Kazekage Rescue Arc
Itachi Pursuit Arc
Adventures at Sea Arc
Main article: Adventures at Sea Arc