Gollum
Gollum is a fictional character from J. R. R. Tolkien's legendarium. He was introduced in the 1937 fantasy novel "The Hobbit", and became an important character in its sequel, "The Lord of the Rings". Gollum was a Stoor Hobbit of the River-folk, who lived near the Gladden Fields. Originally known as Sméagol, he was corrupted by the One Ring and later named Gollum after his habit of making "a horrible swallowing noise in his throat".
The Two Towers
After the marshes, they then cross the desolation and come to the Black Gate. At night, Sam overhears Gollum talking to himself and plotting to get the Ring back. Unable to do so because of the promise he made to Frodo, he resolves to allow something he refers to only as "She" to take care of his problem. Sam realizes that the Ring masters Gollum more than hunger. Gollum persuades Frodo and Sam not to enter the Black Gate, where they would have been surely caught. Gollum tells them of a secret entrance to Mordor. Thus, they head south into Gondor's province of Ithilien, where they get to see one of the "oliphants" in a battle between the men of Gondor and the Haradrim. They are then discovered by a group of Gondorian rangers led by Faramir, the brother of Boromir. Frodo learns from Faramir of Boromir's death. Faramir and the Rangers lead Frodo and Sam into a secret hideout where Sam accidentally reveals to Faramir that Frodo carries the One Ring. As a result of this, Frodo reveals the plan to destroy the Ring in the fires of Mount Doom. Unlike his brother Boromir, Faramir resists the temptation of the Ring. Later that night, Gollum is captured diving for fish into the sacred pool. Frodo negotiates Gollum's freedom with Faramir. The following morning Faramir allows them to go on their way, but warns them that Gollum may know more about the secret entrance than he has been telling them.