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 Lord of the Rings: The Return of the King (video game)
In The Path of the Hobbits, Frodo, Sam and Gollum must first escape from Osgiliath, fighting past orcs to get to the sewers and ensuring that Frodo is not kidnapped by the Nazgûl. However, upon escaping, Gollum decides to betray them and take the Ring back for himself. He tricks Frodo into going on without Sam, but Sam follows them into Shelob's lair. In the lair, Gollum abandons Frodo, and Sam must fight past spiders and orcs, eventually facing Shelob herself, who has attacked Frodo. Sam defeats Shelob, but upon reaching Frodo, he mistakenly believes him to be dead. About to go to Mount Doom on his own, he hides as a group of orcs arrive, and hears them say that Frodo is alive, but unconscious. They take him with them as Sam follows them to the Tower of Cirith Ungol. As Sam is about to enter the Tower, the orcs begin fighting among themselves, and Sam uses the distraction to rescue Frodo. Together, they head to Mount Doom. However, before Frodo can throw the Ring into the lava below, he is attacked by Gollum, who takes the Ring. In the final level, the player controls Frodo as he fights Gollum on the edge of the precipice. Frodo successfully defeats Gollum, knocking him into the lava and destroying the Ring forever.