Throughout the script Venkman was very humorous character. He makes a lot of jokes througout the entirety of the script.
RED = Humorous
Venkman's characteristics in both the movie and script are practically identical. In the movie Venkman is still humorous but shows more signs of sarcasm. Venkman contributes to the plot by adding humor/comedy in the movie.
RED = Humorous and Sarcastic
In the script Stantz was a very enthusiastic and motivated character. He enjoyed being a Ghostbuster and he was always energetic while catching ghosts. Stantz develops the plot by contributing a lot to the start of the Ghostbusters business
BLUE = Enthusiasm and Energetic
In the movie Stantz is exactly the same. He is still enthusiastic and energetic
In the script Spengler is a serious character that does not show much interest in anything else that isn't related to science
In the movie Spengler is still serious and is also very intelligent. He develops the plot of the story because without Spengler's intelligence the gear would not be built.