What is the name of the wizard who guides the hobbit Frodo on his journey in the Lord of the Rings universe?

The wizard who guides Frodo on his journey in the Lord of the Rings universe is Gandalf. He is a wise and powerful wizard who is a member of the Fellowship of the Ring. Gandalf is one of the main characters in J.R.R. Tolkien's epic fantasy novel, The Lord of the Rings, and he is known for his bravery, intelligence, and loyalty to his friends. He plays a key role in the story, helping Frodo and his companions navigate dangerous terrain, overcome obstacles, and battle evil forces.

Gandalf is also known as Mithrandir, which means 'Grey Pilgrim' in the Elvish language. He is a member of the Istari, a group of wizards sent to Middle-earth by the god-like beings known as the Valar to aid in the fight against the evil Sauron. Gandalf is one of the most beloved and iconic characters in fantasy literature, and his wisdom and courage continue to inspire readers and viewers around the world.