Blade Runner (1982)
-Roy Batty (January 8, 2016).
-Leon Kowalski (April 10, 2017).
-Zhora (June 12, 2016).
-Pris (February 14, 2016).
The dream is both allegorical and real, as Deckard actually does dream of a unicorn. An unanswered question in the film is that of whether Deckard is human or otherwise. (Rachel asks him if he'd ever taken the Voight-Kampff test and his lack of response might be taken as a no.) It should also be noted that at one point Deckard describes two dreams that were taken from Tyrell's niece and that in Deckard's own dream there was a unicorn, which poses the question: Was Gaff's choice of a unicorn simply symbolic of a quest for something both beautiful and impossible, or was it taken from Deckard's own dream, which would then point to Deckard himself being a replicant. The humanity of Deckard was left up to the audience to decide.
In "Blade Runner", Joe Turkel played Mr. Tyrell. When he asked Harrison Ford's character how many questions it usually took to spot a replicant, and Ford equivocated, Turkel responded with, "HOW, many questions?" in the same tone of voice that the prosecuting attorney used on him in "Paths of Glory".
It should be noted that a recent development in photography is for a camera (ranging from an iPhone 6 Plus to a specialty camera such as the Lytro Illum) to take multiple photos simultaneously with a range of focus settings. The advantage is that after the image is captured, the editor can select various regions of the image and dial in the focus and depth of field as desired. This is simulated in the way that Deckard can choose a camera angle and focus from a seemingly 2-D photograph.
-Roy Batty (three years and ten months).
-Leon Kowalski (two years and seven months).
-Zhora (three years and five months).
-Pris (three years and nine months).
-Originally, the action happens in San Francisco in 1992. The movie takes place in Los Angeles in 2019.
-In the book the action happens a few decades after a Terminal World War that depleted planet Earth, leaving the planet almost empty of population. In the movie, all references about the Terminal World War are omitted, and Los Angeles appears simply overpopulated and polluted.
-In the book the artificial humans are simply called androids. In the movie they are named Replicants or 'skinjobs'.
-In the original novel, the company that makes the Replicants is the Rossen Association. In the movie is the Tyrell Corporation.
-The original owner of the company who created Replicants is Eldon Rossen. In the movie he is Eldon Tyrell.
-In the novel is explained that almost all of mankind has emigrated to planet Mars in order to escape the toxic radiation on planet Earth. In the movie, Mars is changed to the "Off-World colonies", to give the idea that human race has colonized several planets in outer space.
-In the book, the biggest symbol of status is to have a live animal as pet, since most of them have gone extinct. In the movie, this has been omitted, but it is implied that real animals are so scarce and expensive that replicated animals have become standard.
-In the novel, Deckard is married to a woman called Iran and their pet is a mechanical sheep, being their dream to have a real sheep. In the movie, his civil status is divorced and all references to the sheep were left out.
-The special police unit that prosecutes the Replicants is called Rep Detect in the book, short of "Replicants Detection". In the movie, they are simply known as Blade Runners.
-In the book there is a subplot about a Replicants' secret organization which helps them to hide from the humans, and escape to Alaska to get away from the radiation. The organization is discovered after an encounter between Deckard and an opera singer called Luba Luft (revealed by Deckard as a Replicant). In the movie, it's explained that all Replicants are outlawed on planet Earth after a massacre in an Off-world colony. The character of Luba Luft was completely omitted.
-In the novel the Voight-Kampff's test was recently created by the doctors Johann Voight and Lurie Kampff to measure the emotional responses of the humans to distinguish them of Replicants. In the movie, the names of the creators are omitted and it's established that the test has been part of the job for a long time.
-In the book all people share a telepathic religion called Mercerism, created and led by Wilbur Mercer. The Mercerers use "Empathy Boxes" to connect with other members of the order to share their emotions, bringing the ability to elect that emotion they want to feel. In the movie all references to Mercerism were completely omitted.
-At the end of the book, Deckard finally unites his mind with Wilbur Mercer, becoming only one being and causing Deckard to be the new leader of the Mercerism. In the original film ending, Deckard and Rachael flee Los Angeles to live together in the north (in later re-editions, the movie ends a scene before, when Deckard finds Rachael sleeping in his apartment and they walk into an elevator, heading into an unknown future.