Gat or Gato is a character in Saiyuki Reload that started appearing at "Even a Worm Arc". His full name is Gaty Nene Hawk, as seen on volume 9, chapter 43 of Saiyuki Reload.

Hazel's large bodyguard/traveling companion, he wields two pistols. He fights recklessly for Hazel because he can be instantly brought back to life or healed as long as Hazel has a soul stored in his pendant or there is a corpse nearby to take a soul from. His past is largely unknown except that he met Hazel several years before, was injured by him, but spared. He believes that being with and protecting Hazel is his destiny. He appears to be of Native American descent, and doesn't require sleep. He is said by Ukoku Sanzo to have been a young man of a tribe that worships nature. When the demons they had forged peace with attacked, Hazel tried to help. Gato originally opposed him and became the first human Hazel had ever mistakenly killed. He immediately was brought back, but his tribe saw him as an abomination against nature and shunned him.

A man from the Eastern continent, he visited Shangri-la with Hazel. He is a dead man brought back to life by Hazel's reanimation technique; the perfectionist Hazel is his world; he was a "human", but at this point in time he can't elaborate on that experience. He travels with Hazel as the man's bodyguard, and takes Hazel's commands as absolute. He has a huge body over two meters tall, strong arms, and quick movements. He defeats youkai with his pair of highly accurate handguns, and will sacrifice his own body to protect Hazel. When he loses his life in battle doing so, he is revived by Hazel's reanimation technique.

He has the yellow eyes specific to those who have been reanimated, and the scar on his forehead remains that was given to him by Hazel during life. He doesn't require sleep or food, or anything else related to living. He is extremely silent and expressionless, but his is a pacifist and has a good-natured heart. He thinks of Goku, who nonchalantly connected with him, as a friend, apparently.

(Source: Saiyuki.wikia)