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
Gollum disposes of the Hobbits' food, blaming Sam. Frodo tells Sam to go home, before Frodo and Gollum continue to the tunnel leading to Mordor, where Gollum tricks him into venturing into the lair of the giant spider Shelob. Frodo narrowly escapes and confronts Gollum, telling him that he must destroy the Ring for both their sakes. Gollum attacks Frodo, but falls down a chasm. Frodo continues on, but Shelob discovers, paralyses and binds him. However, Sam arrives and drives her away. Sam hides as Orcs appear and take Frodo with them. Sam follows the Orcs into the Tower of Cirith Ungol, and frees Frodo so they can continue their journey.