There were many people in the 20,000-mile underwater world. The following are the introductions of some famous people: 1. Captain Nemo: He is the protagonist of " 20,000 Miles Under the Sea ", a brave explorer and captain. He was a scientist who had in-depth research on the ocean and marine life. Aronnax: He is a French scientist and a friend of Captain Nemo. He was responsible for writing Nimo's diary to record the real-time situation of the expedition. 3 Mercury: He is a colleague of Aronnax and a scientist. He provided many useful suggestions and scientific analysis for Nimo's exploration. Princess Zelda: She was the heroine in Pearl Harbor and the princess in Twenty Thousand Miles Under the Sea. She was a brave, strong, and adventurous female character. Morris: He was the male lead in " Mysterious Island " and also Captain Morris in " Twenty Thousand Miles Under the Sea ". He was an adventurous young man with a strong interest in the ocean and exploration. These are some of the famous characters in 20,000 Miles Under the Sea. Of course, there are many other characters that are worth exploring and understanding.