Undersea Super Train: Marine Express

The plot of Marine Express can be described in two parts. The first part focuses on the people boarding the train and the problems they encounter on it. The second part takes place after the train has stopped at its half-way point, an island that used to be home to an ancient civilization millennia ago and has its fair share of secrets.

• 
  Kosei Tomita

  Shunsaku Ban (voice)
• 
  Nachi Nozawa

  Black Jack (voice)
• 
  Mari Shimizu

  Astro Boy as "Adam" (voice)
• 
  Hisashi Katsuta

  Professor Ochanomizu as "Dr. Narzenkopf" (voice)
• 
  Yoshiko Ohta

  Princess Sapphire as "The Empress of the Mu Empire" (voice)
• 
  Chikao Ohtsuka

  Duke Red as "Director Credit" (voice)
• 
  Kaneta Kimotsuki

  Hosuke Sharaku (voice)
• 
  Mami Koyama

  Chocola as "Milly" (voice)
• 
  Koji Yada

  Skunk Kusai (voice)
• 
  Kenji Utsumi

  Acetylene Lamp (voice)