When creating the script, Kenneth George King was originally inspired by the sci-fi horror film "Evil Alien", which tells about the pregnancy of aliens. Under the repeated weighing of various animals such as donkeys, mice, horses, etc., Jonathan focused on In the case of sheep, the biological mutation on the earth is used as the theme of the film, and the producer's idea of Jonathan also hit it off
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The historical background of the film is the enclosure movement that appeared in the Middle Ages. The enclosure movement was compared to "sheep eating people". Peasants lost their land and homes and became hired laborers of farmers. The title of the film "Black Sheep" is a pun, literally translated as "black sheep", that is, sheep that have been injected with genetic errors. In English slang, it also means "useless person" and "black sheep", because traditionally black wool is not as valuable as white wool and is often regarded as a "useless inferior product." Kenneth George King followed the ancient British superstition behind the word, thinking that the black sheep is the incarnation of the devil, and used this word to refer to the "sheep killer"
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