The main characters are Captain Nemo, a complex figure with his own secrets and motives. Professor Aronnax, who is intelligent and curious, trying to understand the underwater world. Conseil, who is loyal and level - headed, and Ned Land, who adds a sense of adventure and restlessness to the story with his desire to break free from the underwater confinement.
Captain Nemo is one of the main characters. He is the mysterious and brilliant captain of the Nautilus. Another is Professor Aronnax, who is on an expedition and gets caught up in Captain Nemo's world.
Well, Conseil is also a main character. He is Professor Aronnax's faithful servant. He is calm and often provides practical advice. And Ned Land, the harpooner, is a key character too. He is more impulsive compared to the others and is eager to return to the surface world.