What is the name of the creature who betrays the hobbits in the Lord of the Rings universe?

The creature who betrays the hobbits in the Lord of the Rings universe is named Gollum. Originally known as Smeagol, he was a hobbit-like creature who was corrupted by the One Ring and became obsessed with it. Gollum first encounters Frodo and Sam on their journey to destroy the Ring, and he becomes fixated on taking it from them.

Gollum is a complex character who embodies both good and evil. He has a split personality, with one part of him wanting to help Frodo and the other part wanting to take the Ring for himself. Throughout the story, Gollum provides valuable information and guidance to Frodo and Sam, but he ultimately betrays them to the villainous Sauron.

Gollum is a memorable and tragic character in the Lord of the Rings universe. He represents the corrupting influence of power and the struggle between good and evil.