!!Exterminator 1
* CaliforniaDoubling: Even though the film's end credits say, "filmed in Vietnam", the opening Vietnam scene was filmed at Indian Dunes National Park in California.
* CastTheRunnerUp: Steve James originally read for the small part of the bartender. However, James Glickenhaus was so impressed with his reading, that he cast him in the part of Michael.
* StarMakingRole: For both Creator/RobertGinty and Steve James.

!!Exterminator 2
* ActorInspiredElement: Mario Van Peebles came up with all the costumes he wore in the film.
* BTeamSequel: James Glickenhaus had no involvement with the film whatsoever.
* CaliforniaDoubling: Although set in New York, budget issues meant that shooting had to re-locate to Los Angeles.
* CastTheRunnerUp: Mario Van Peebles originally auditioned for the role of Be Gee.
* DeletedScene: Some lobby cards and stills show several scenes cut from the movie; John looking at wounded and dead people inside the night club after helicopter crashes on it and explodes, Caroline helping someone who got injured in the same deleted club explosion scene, John throwing the wheel cap on one of the gang members who jumps onto Be Gee's garbage truck when he tries to stop the gang members from stealing the armored car, after the armored car robbery and his fight with gang members John escapes from the police and is hiding somewhere while his head is covered with blood due to the injury he got during the club explosion, Caroline taking care of John's head wound, longer version of the scene where X and his gang members attack Caroline in the park, also some lobby cards show pictures from original ending with John and X fighting with each other next to the garbage truck and wounded X kneeling on the ground while some cop is pointing his shotgun at him.
* ExecutiveMeddling: Creator/TheCannonGroup wasn't pleased with director Mark Buntzman's original cut of the film, so they had noted film doctor William Sachs do extensive reshoots in Los Angeles.
* KeepCirculatingTheTapes: Was in this state for almost three decades.[[note]] The movie was released in 1984. It didn't see a DVD release until early 2013.[[/note]]
* MissingTrailerScene: The theatrical trailer shows following deleted and alternate scenes from the original rough cut of the movie; Night club explosion that happens after the gang shoots down a police helicopter, which crashes into it. The helicopter pilot is shown burning a little longer while he tries get out of the burning helicopter. There is also a shot of a wounded John looking at this helplessly. John and Caroline trying to help someone who got hurt during the explosion by pressing something on his wound. X pointing at something and screaming while standing on the armored car. X and John see each other for the first time face to face and X points his finger at John. This scene happened after the helicopter crash and club explosion. Originally, there was a part where John and Be Gee try to stop gang members from robbing the armored car, with Be Gee chasing them in his garbage truck, and John fighting with them on the street. Chase scene between Be Gee's garbage truck and armored car driven by gang members. Originally, this scene happened after the gang shoots down the helicopter, completely deleted club explosion scene and John's fight with gang members on the street. Another deleted garbage truck chase scene. John and Caroline are driving in the garbage truck, but they are attacked by gang members who jump onto the sides of the truck, but John manages to get rid of one when he slams him into a light pole or something. Differently edited dialogue scene in the club between John and Be Gee. A couple of more extra shots from the scene when gang members attack Caroline while she is with John in the park. Alternate mirrored shot of X shooting at Be Gee.
* ThrowItIn: Mario Van Peebles came up with X's character and attire shortly after being cast.
* TroubledProduction: The film was hit by budget problems, heavy re-editing and reshoots, and censorship issues. Creator/TheCannonGroup studio was not pleased with director Mark Buntzman's original rough cut of the film, so they hired film doctor William Sachs to do extensive reshoots in Los Angeles to improve it. Robert Ginty was unable to return for the reshoots, so filming was completed with his StuntDouble.
* WhatCouldHaveBeen: [[spoiler: Caroline lived in Mark Buntzman's original script for the film. Moreover, Caroline saved Eastland from being killed by X by fatally shooting X at the end.]]
** According to one of the audio engineers for the film's sound track, Ken Gordon, Bob Brown, and him cut about 20 records of what they had mixed for the movie for a sound track album, but it was never released.
* YouLookFamiliar: At conventions, Irwin Keyes has said that he played the same character in both Exterminator films, despite the fact that his character was killed in this movie.
----