Professor Lidenbrock is the enthusiastic and determined protagonist who leads the expedition to the center of the Earth.

Hans Bjelke is the experienced and reliable Icelandic guide who accompanies Professor Lidenbrock and Axel on their journey.

Axel Lidenbrock is the adventurous and curious nephew of Professor Lidenbrock who joins him on the expedition to the center of the Earth.

The Voynich Manuscript is the mysterious and enigmatic manuscript that Professor Lidenbrock discovers, which contains cryptic clues and illustrations that lead him to believe that a journey to the center of the Earth is possible.

Mount Hekla is the extinct volcano located in Iceland that Professor Lidenbrock and his companions use as an entrance to the center of the Earth.

The Sea of Fire is the vast and dangerous subterranean sea that Professor Lidenbrock and his companions encounter during their journey to the center of the Earth.

The Roc is the giant prehistoric bird that Professor Lidenbrock and his companions encounter during their journey to the center of the Earth.

The Atlanteans are the ancient race of beings that Professor Lidenbrock and his companions encounter during their journey to the center of the Earth.

The Lodestone is the powerful magnet that Professor Lidenbrock and his companions encounter during their journey, which disrupts their compasses and causes them to lose their way.

The Earth Spirit is the mysterious and powerful being that Professor Lidenbrock and his companions encounter at the center of the Earth.

The Great Eruption is the volcanic eruption that forces Professor Lidenbrock and his companions to make a hasty retreat from the center of the Earth.

Stromboli is the island that Professor Lidenbrock and his companions are eventually rescued from.

Journey to the Center of the Earth is the book that Professor Lidenbrock writes about his expedition to the center of the Earth.

Jules Verne's novel, 'Journey to the Center of the Earth', was first published in 1864.

Journey to the Center of the Earth is the name of the film adaptation of Jules Verne's novel, released in 2008.