A Beautiful girl with a shadow hidden somewhere. She is popular with the boys, though because of that girls are jealous and loathe her. She absolutely hates men due to a certain incident in the past. She has feelings for Ayumu that go beyond friendship.
Jessie is a 15 year old girl who has a special type of blood that heals every illness. She was trained ever since she was a little girl at the caravan. She heads to her district to start her work as a docter. She falls in love with Eagle-san more into the story. She also saved his life by giving him, her blood.
Ri Seiryuu, who is found on a little rescue boat, along with another shipwrecked man, is more than just a cast away. Rescued as a little boy, by a fishing boat, the crew as well as the captain notice that something is wrong with the boy. He never smiles and behaves odd towards others. The Captain of the fishing boat decides to try an experiment with the boy. Until he smiles, he is not allowed to get out. Seiryuu is forced to live seperated from the crew. The room, he gets locked up in, is small but full of books, a TV and videos. Information about mankind and how it behaves on the planet. He grows up in a room filled with knowledge about killing, destroying and hate, and is kept there until his body has matured.
Grandis is a 28 year-old woman. She was born into a rich Italian family, but is now broke and disowned by her relatives. She is the leader of the "Grandis Gang", a trio of jewel thieves. After being rescued along with Nadia, Jean and Marie by the Nautilus, she and her henchmen befriend the children. She develops a huge crush on Capt. Nemo. She also becomes a mother-figure to Nadia.
Satsuki went to the same elementary school as Misuzu, and is a girl that knows about Misuzu's past. She continues to harass and tease Ayumu and Misuzu, but what are her true intentions...?
17 year old Yuan is a blue doctor from the Pacis district. He and Jessie are child friends and he has loved her just as long. Yuan claims to be engaged to Jessie, but later it is proven to be a lie and says he will not lose her to Eagle.