Professor Pierre Aronnax is a 40-year-old Frenchman who works as an Assistant Professor at the Museum of Natural History in Paris. He possesses an adventurous spirit and a deep passion for natural history, having authored a respected book on submarine grounds. His scientific curiosity often clashes with his moral compass as he documents the marvels of the underwater world.

Conseil is a 30-year-old Flemish servant who has accompanied Professor Pierre Aronnax on his research journeys for ten years. He is highly capable, in excellent health, and extremely obliging to his employer. He remains calm under pressure and uses his sharp memory to help classify the marine life they encounter.

Ned Land is a 40-year-old Canadian harpooner of tall stature and strong build. He is reserved but possesses a passionate temperament, especially regarding hunting and his personal freedom. He struggles significantly with the isolation and confinement of their underwater captivity, constantly looking for a way to escape.

Captain Nemo is the enigmatic, wealthy, and highly intelligent commander of the Nautilus. Having rejected human society, he lives an isolated existence exploring the ocean's depths in his technologically advanced submarine. He demonstrates deep empathy for the oppressed while harboring intense, undisclosed anger toward the society he left behind.

Commander Farragut is the dedicated captain of the Abraham Lincoln. He firmly believes that the mysterious object terrorizing the seas is a giant narwhal and makes it his absolute mission to destroy it. He commands his ship with intense focus and offers a large reward to the first person to spot the creature.