The Dark Network of Etemon - S1-E15
Revealing mistake: Watch the scene where Biyomon and Palmon are eating. A Pagumon passes, Biyomon turns her head and then has two beaks. Obviously a frame overlap.
Digimon (1999)
1 mistake in The Dark Network of Etemon
Starring: Steve Blum, Mona Marshall, Derek Stephen Prince, Tifanie Christun
Genres: Action, Adventure, Animated, Family, Fantasy, Thriller
Takato Matsuki: Sorry to wake you up so late.
Henry Wong: That's okay. I was just sleeping.
Terriermon: And not just sleeping... snoring too.
More trivia for Digimon
Question: How did the streetcar, phone booths, and vending machines end up in the digiworld?
Answer: People who built the digital world most likely had them sent there. Gennai tells the kids in the last episode that the streetcar was from San Francisco, and he asked them to take it back for him.
Answer: We are never told as to how they got there.