Pilot episode introduces the janitor of the guest house, John Rambo, in a very dramatic way. He is holding a wiper like a rifle or machine gun and a thrilling background music is playing. Camera moves in a way that the wiper actually looked like a rifle at the beginning of the scene. Later it turns out that John Rambo Cockroach Killer is a spin-off from the main character of the movie First Blood. Rambo was an instant hit and played a vital role in the popularity of the series. Producers wanted to remove the character of Rambo after the pilot episode, but its success made them to decide otherwise. One of the producers admitted on TV that after the success of Rambo in pilot episodes, every episode's main focus was the janitor of the guest house.