The true identity is Shinichi Kudo, a famous high school detective who was forced to take APTX4869 by the Black Organization and shrank to the size of an 8-year-old due to side effects. He is hiding his identity. He is excellent at deduction. He likes Ran. Known as Kid's only worthy rival, he is nicknamed 'Kid Killer.' Though they are rivals, they sometimes help each other. A massive Holmes geek. He is tone-deaf but has perfect pitch. He is on the ship.

A phantom thief whose true identity is unknown. Basically, he returns the treasures he steals. He is highly skilled in magic, flirting, disguise, and maintaining a poker face. He always calls Conan 'Great Detective.' He is handsome and speaks slyly. He easily captures women's hearts. While he is more capable than Conan, he often just plays along with him. He has great chemistry with Conan and knows that Conan is actually Shinichi. As a side note, he is terrified of fish (though no one knows this). While being chased by Conan and Heiji after stealing the Memories Egg, he was sniped by Scorpion, dropped the egg, and went missing. He is alive. There is a high possibility he is hiding on the ship disguised as a crew member or another passenger. Whether he is actually on the ship remains a mystery.

17 years old. Beautiful and skilled in Karate. She likes Shinichi and does not know that Shinichi and Conan are the same person. She dotes on Conan. She is best friends with Sonoko. She attends Teitan High School and has excellent athletic nerves. Captain of the Teitan High Karate Club. Daughter of Kogoro. She is on the ship.

17 years old. Ran's best friend. A huge fan of Kaito Kid. As the daughter of the incredibly wealthy Suzuki family, she has immense wealth but pursues a down-to-earth lifestyle. She has short hair and always wears a headband. She has a frank and easygoing personality. She might seem thoughtless, but she is actually deep-seated, friendly, and has a good heart. She is boy-crazy but knows her limits. She is on the ship.

The person who created APTX4869. She took the drug herself to escape the organization and shrank due to side effects. Her real name is Shiho Miyano. She is aloof and tsundere, often nagging Conan. She secretly likes Conan but hides it. Even though she shrank, she is beautiful and smart. She excels in science, surpassing Conan in that field. She did not board the ship but occasionally provides information when contacted by Conan. She knows Conan is Shinichi.

After losing all her family and being left alone, she has been working as a pâtissière in Paris. She visited the Suzuki Group's art museum after noticing a blueprint of an egg she found while organizing her late grandmother's belongings. She does not yet know that the egg was made in a pair. She has grey eyes. She doesn't know Conan is Shinichi and finds him as cute as a child. She is actually Maria's granddaughter, though she doesn't know it herself. The owner of the egg. She is on the ship.

She introduced herself as a Chinese researcher studying the Romanov dynasty, the last dynasty of Imperial Russia. She quickly became close to Natsumi Kosaka, Ran Mori, and Sonoko Suzuki. However, she was pretending to be Chinese and is actually Russian. Her true identity is the serial killer Scorpion and a descendant of Rasputin. She obsessively kills by shooting the right eye. She is the one who sniped Kid. She is on the ship.

Secretary to Chairman Suzuki. He is a bit clumsy and wears horn-rimmed glasses. He is on the ship and is not very attentive. Because he has a feather allergy, he uses pillows without feathers and avoids birds. Currently, he is being framed as the culprit after Sagawa was shot dead. However, he is not the real culprit. He is on the ship.

Ran Mori's father. He is boisterous and a womanizer. He is separated, not divorced, from his wife and cares for Ran quite a bit. He doesn't show it often, but he saves Ran whenever she is in danger. He is physically strong. A former police officer, now a detective. He is a complete 'Sleeping Detective,' but thanks to Conan's tranquilizer gun, he is a famous detective. In terms of pure physical combat power here, he is likely the strongest. He is a good shot. He loves alcohol. His deduction skills are low. He is on the ship.