1- Every child who will play in the series must be trained in Classic Rockology for at least one year.
2- Originally, Castiel was supposed to be a demon. As a result, Misha auditioned for the role of a demon reading divine to summon the devil. Unfortunately, the story failed. However, Misha got the role.
3- 80% of Chevy Impalas in the world belong to Supernatural Studios. According to estimates, they will have 100% of Impalas in 2014.
4- There are seven published Supernatural novels, and the last one is Wanted, Dead Or Alive. In the novel, Dean falls in love with a cadaver.
5- The favorite song of Mary Winchester is “Hey Jude” from The Beatles because this song is the song where Eric Kripke lost his virginity.
6- In the episode “Everybody Loves A Clown” (2×2), Ellen is reading the newspaper. If you stop and pay attention, it says, “Ellen + John = Ash.” This is actually a reference to Ash’s being the illegitimate children of Ellen Harvelle and John Winchester, but this has been changed to John’s killing Ellen’s husband because Jeffrey Dean Morgan is too busy to shoot the necessary scenes.
7- The “fake” alcohol they use on the set is actually real because the real alcohol is cheaper than the “fake” alcohol used by the TV and film industry. So, all scenes with alcohol are shot at the end of the day.
8- Jeffrey Dean Morgan, who portrays the fathers of the Winchester brothers in the series, is actually only 12 years older than Jensen Ackles.
9- Most phone numbers seen in the first seasons of the series were active at the time of broadcasting. So if you had called 1-866-907-3235 in 2005, you would have encountered a voice message from Dean. That message is; “This is Dean Winchester. If this is an emergency, leave a message. If you are talking about 11-2-83, contact me with your coordinates.”
10- The series is probably using an accessory that few have noticed so far; a wall clock. Although this watch was featured in the Bloody Mary section for the first time, it was used dozens of times after this episode.
11- It is said that Jensen Ackles has turned down the role of Hawkeye in Avengers so that he does not have to leave Supernatural.
12- Jared Padalecki portrayed the character of Dean in Gilmore Girls just before joining Supernatural. But coincidences do not end here; Jensen Ackles played in the movie Blonde about the life of Marlyn Monroe in 2001. Her best friend in the movie was Cass, and Derek of Grey’s Anatomy was played by Patrick Dempsey!