Undersea Super Train: Marine Express was a 1979 made-for-TV Japanese Animated film featuring characters from various Osamu Tezuka manga. The whole thing is basically an Alternate Universe Fic except that it was made by the actual creator of the characters. (While Tezuka was already known for creating Expies of his own characters to reuse from one manga to the next, this movie (one of three) was created specifically for crossover purposes.) Among the characters involved are Black Jack, Astro Boy, The Princess Knight, and Kimba the White Lion.
The plot involves the world's first undersea train, in its maiden voyage from Los Angeles to Japan. Several characters board it with their own secret agendas, involving everything from weapon smuggling to preventing pollution. Then midway through the trip the train is whisked back in time to the era of the lost Mu Empire, which once reigned over the Pacific, and the characters must now help liberate it from an evil tyrant.
Not to be confused with the TV series Supertrain.
Tropes in Marine Express include:
- A.I. Is a Crapshoot: The train's, when Adam takes over it.
- Anyone Can Die: By the end, several characters are dead, including Milly's father, Astro Boy, his creator and Sharaku.
- Bittersweet Ending: several characters die, others stay on the past to live there. But at least Rock and The Queen remain together. Only Detective Ban returns to the present.
- The Cameo: Tezuka himself, as a tourist.
- The Chew Toy: Detective Ban; also Dondra at Sharaku's hands.
- Cool Train
- Eenie, Meenie, Miny Moai: The heroes are attacked by giant stone heads on Mu.
- Evil Chancellor: Dondra.
- Excuse Plot: Most of the story doesn't make much sense; in particular, Sharaku's reason for bringing the Marine Express to the past.
- The Hero: Rock.
- Love at First Sight: Between Rock and the Queen.
- Murder Mystery: The movie starts with one.
- Paper-Thin Disguise: The Queen's, when she disguises herself as Dondra.
- Royals Who Actually Do Something: The Queen of Mu (Princess Saphire).
- Smug Snake: Sharaku, although he pretends to be Affably Evil.
- 20 Minutes into the Future: It takes place in the far future of- 2002.
- Visual Gag: So many it's sometimes hard to take the movie seriously.
- What Do You Mean, It's for Kids??: Several characters die in the film (though off camera) and some appear almost nude.
- What Measure Is a Non-Human?: Adam (Astro Boy) and Milly.