Factual error: Semi-automatic pistols, rifles and fully-automatic rifles and machine guns never eject spent shell casings in the show.
Continuity mistake: A table full of food is rolled out for Korchek, Race Bannon's double, to mimic Race's eating habits, but then instantly changes to a table with a pad and pen.
The House of Seven Gargoyles - S1-E23
Jonny Quest: We have a proverb in my country, Hadji - seeing is believing.
Hadji: We have one in mine, too - I'm from Missouri.
Trivia: "Calcutta Adventure" is the episode where Hadji and Jonny meet and become friends after Hadji saves Dr. Quest's life from an assassination attempt.