Supernatural

"It's a series."

- Eric Kripke on Supernatural.

Supernatural is an American television series by Eric Kripke. It is filmed in Vancouver, Canada, and debuted on September 13, 2005 on the WB, and is now part of The CW's lineup.

The show follows brothers Sam and Dean Winchester, who travel across America in a black 1967 Chevy Impala investigating and combating paranormal events and other unexplained occurrences, many of them based on American urban legends and folklore as well as classic supernatural creatures such as vampires, werewolves, and ghosts.

Main Characters

 * Sam Winchester (all seasons)
 * Dean Winchester (all seasons)
 * Castiel (seasons 4-13)
 * Crowley (seasons 5-12)
 * Lucifer (seasons 4-5, 7, 11-13)
 * Ruby (seasons 3-4)
 * Bela Talbot (season 3)
 * Jack (seasons 12-13)

Hunters

 * Bobby Singer (all seasons)
 * John Winchester (seasons 1, 2, 4-5, 11)
 * Ellen Harvelle (seasons 2, 5-6)
 * Jo Harvelle (seasons 2, 5, 7)
 * Mary Winchester (seasons 1, 2, 4-6, 11-13)
 * Ash (seasons 2, 5)
 * Gordon Walker (seasons 2-3)
 * Samuel Campbell (seasons 4, 6)
 * Rufus Turner (seasons 3, 5-6, 11)
 * Gwen Campbell (season 6)
 * Christian Campbell (season 6)
 * Garth Fitzgerald IV  (seasons 7-9)
 * Jody Mills (seasons 5-13)
 * Claire Novak (seasons 4, 10-13)
 * Alex Jones (seasons 9, 11-13)
 * Asa Fox (season 12)
 * Eileen Leahy (seasons 11-12)

Angels

 * Gabriel (seasons 2-3, 5, 9)
 * Raphael (season 4-6)
 * Michael (season 5, 13)
 * Joshua (season 5,12)
 * Zachariah (season 4-5)
 * Anna Milton (season 4-5)
 * Uriel (season 4-5)
 * Balthazar (season 6)
 * Naomi (season 8)
 * Metatron (season 8-11)
 * Gadreel (season 9)
 * Samandriel (season 8)
 * Hannah (season 9-11)

Demons

 * Azazel (seasons 1-2, 4, 6)
 * Lilith (seasons 3-4)
 * Meg (seasons 1, 2, 5-8)
 * Alastair (season 4)
 * Abaddon (seasons 8-9)
 * Cain (seasons 9-10)
 * Dagon (season 12)
 * Asmodeus (season 13)

Leviathans

 * Dick Roman (season 7)
 * Edgar (season 7)
 * Dr. Gaines (season 7)
 * Chet (season 7)
 * Agent Valente (season 7)
 * Susan (season 7)
 * Royce (season 7)
 * George (season 7)
 * Joyce Bickleebee (season 7)

Supernatural Beings

 * Tessa (seasons 2, 4, 6, 9)
 * Death (seasons 5-7, 9-10)
 * Eve (season 6)
 * Lenore (seasons 2, 6)
 * Eleanor Visyak (season 6)
 * God  (seasons 4-5, 10-11)
 * Amara (season 11)
 * Billie (season 11-13)

Azazel's special children

 * Max Miller (season 1)
 * Andrew Gallagher (season 2)
 * Ava Wilson (season 2)
 * Jake Talley (season 2)
 * Ansem Weems/Weber (season 2)
 * Lily Baker  (season 2)
 * Scott Carey  (season 2)

Other characters

 * Jessica Moore (seasons 1, 2, 5)
 * Missouri Moseley (seasons 1, 13)
 * Meg Masters (seasons 1, 4)
 * Victor Henriksen (seasons 2-4)
 * Pamela Barnes (seasons 4-5)
 * Adam Milligan (seasons 4-5)
 * Lisa Braeden (seasons 3, 5-6)
 * Ben Braeden (seasons 3, 5-6)
 * Ed Zeddmore (seasons 1, 3-4, 9)
 * Harry Spangler (seasons 1, 3-4, 9)
 * Ronald Reznick (seasons 2, 4)
 * Becky Rosen (seasons 5, 7)
 * Kevin Tran (seasons 7-9, 11, 13)
 * Linda Tran (seasons 7-9)
 * Charlie Bradbury (seasons 7-10, 13)
 * Rowena MacLeod (season 10-13)

Main Villains

 * Azazel (seasons 1-2)
 * Meg (seasons 1-2, 5-8)
 * Gordon Walker (seasons 2-3)
 * Lilith (seasons 3-4)
 * Ruby (seasons 3-4)
 * Uriel (season 4)
 * Alastair (season 4)
 * Zachariah (season 4)
 * Michael (season 5, 13)
 * Lucifer (seasons 5, 7, 11-13)
 * Crowley (seasons 5-12)
 * Raphael (seasons 5-6)
 * Eve (season 6)
 * Samuel Campbell (season 6)
 * Dick Roman (season 7)
 * Edgar (season 7)
 * Naomi (season 8)
 * Abaddon (seasons 8-9)
 * Metatron (seasons 8-11)
 * Gadreel (season 9)
 * Bartholomew (season 9)


 * Rowena MacLeod (seasons 10-13)
 * The Darkness (season 11)
 * Lady Toni Bevell (seasons 11-12)
 * Doctor Hess (season 12)
 * Arthur Ketch (season 12)
 * Dagon (season 12)
 * Asmodeus (season 13)

Seasons

 * Season 1 (2005 - 2006)
 * Season 2 (2006 - 2007)
 * Season 3 (2007 - 2008)
 * Season 4 (2008 - 2009)
 * Season 5 (2009 - 2010)
 * Season 6 (2010 - 2011)
 * Season 7 (2011 - 2012)
 * Season 8 (2012 - 2013)
 * Season 9 (2013 - 2014)
 * Season 10 (2014 - 2015)
 * Season 11 (2015 - 2016)
 * Season 12 (2016 - 2017)
 * Season 13 (2017 - 2018)

Music
Supernatural heavily features classic rock and hits of the 70's and 80's.
 * For a comprehensive list, please see Supernatural Music.
 * The title card for every season changes to reflect the theme.
 * Mainly "Carry On Wayward Son" by Kansas

Season 1
The first season starts off as the brothers begin searching for their father, John Winchester. For several episodes, Sam and Dean Winchester receive contacts and travel around the USA looking for John. The series begins with the death of their mother, Mary Winchester, at the hands of the demon with Sam (as a baby) as a witness, and their lives as hunters in search of the demon that killed their mother.

22 years after Mary's death, Sam now goes to college and lives with his girlfriend, Jessica Moore, but at one point Dean shows up to tell him their father has gone missing. Sam hesitantly goes on the hunt with Dean, and their first encounter is with a ghost. After that, Dean and Sam return to find that Jessica has been killed by the Yellow-Eyed Demon. Sam travels with Dean in order to get revenge for his girlfriend and his mother, and travels with Dean to get back, at the same time searching for their father. On the way they face ghosts, shape-shifters, Wendigos and other creatures such as vampires and demons. They also meet new people, while introducing the audience to Bobby Singer. Sam is also revealed as we learn of his past, as he meets someone who has special powers like him.

The season ends with Sam and Dean finding their father, but only to lose him again as he is captured. Dean and Sam eventually find him, but he is revealed to be possessed by Yellow-Eyes, who injures Dean very badly.

Yellow-Eyes then tells Sam of his intention to what he wants with him. Sam shoots John in the leg with the Colt, where he rushes both John and Dean to the hospital, only to crash into a truck driven by a possessed driver., thus ending Season 1.

Season 2
The second season revolves around Dean and Sam searching for the Demon, Yellow-Eyes. The second season picks up where the first season left off. As Dean is in a coma and dying, John Winchester sells his soul to the Demon in order to save Dean's life. The Impala is also destroyed. When John dies, Dean promises something to him. Dean and Sam stay in contact with Bobby, all while meeting new characters such as Ash, Ellen and Jo Harvelle, who lives in a roadhouse. Jo and Ellen have also lost someone, who was partners with John Winchester. Dean and Sam encounter new creatures, such as zombies, werewolves, croatoans, hellhounds, crossroad demons, and old enemies, such as ghosts and vampires and demons. The Winchester Brothers also frequently get into trouble with the law now, as indicated to an accident in the previous season. The season ends with the roadhouse being destroyed, Ash being killed, Ellen and Jo missing and yellow-eyes capturing Sam. Sam and other special children battle it out to stay alive, but only one of them can survive. Many are killed, as there is a traitor in the midst.

The penultimate episode ends with Sam being killed and the finale begins with Dean selling his soul to a crossroads demon. Dean is given one year to live, as Sam is brought back to life. They travel to a graveyard, where one of the special children opens the gates of Hell. Bobby and Ellen team up with Sam and Dean to fight yellow-eyes, and Dean kills the demon with the Colt, with some assistance from their father's spirit. As a consequence, dozens of demons escape. The season finale ends with Sam and Dean setting out to stop them, as well as breaking the contract that Dean had with the demon.

Season 3
"And I thought, now we have bigger budget constraints, let all Hell break loose!"

- Eric Kripke on the third season.

This season is about Sam and Dean trying to break the deal that Dean made the season finale prior to this season. They set out to find the demon in charge of Dean's contract. Sam and Dean encounter numerous demons that have escaped, due to the gates of hell being pulled open. Dean is having the time of his life, as he has one year left to live. The brothers meet an old foe, and make a new one by the name of Bela Talbot. They also make a new ally known as Ruby, who is a demon. The brothers encounter several foes, and are hunted down by the law, until they are declared dead halfway through the season. Specials include a Christmas special, and a special involving Bobby. Another episode revolves around Dean as the brothers attempt to stop some changelings, while Dean meets a former lover known as Lisa Braeden with whom he had a one-night stand. ("You think it's so easy doing one-night stands... well try playing in a rock 'n roll band!") The new foe, Bela Talbot proves worthy as she can steal supernatural objects, such as the Colt from the brothers. They attempt to track her down in order to get the Colt back, but realize a dark secret about her. She has a contract with a demon as well, and reveals the name of the demon in charge, just before being killed off-screen by a pack of hellhounds. The season finale focuses on Dean's time nearly being up, as they track down Lilith, with Bobby helping them.

As they close in on her, they discover she has taken Ruby's original form, and Dean's time is up, with Lilith letting the hellhound in the room, as it forwards on Dean and mauls him to death. A distraught Sam watches from close up, and as Lilith is about to kill him, she soon discovers that he is immune to her powers, due to his abilities. Lilith flees, and Sam cradles Dean's lifeless body. The scene ends with Dean calling out for Sam, and then cuts to black.

Season 4
"What next? Let's have the boys actually hunting like they used to! Only this time... CGI!"

- Sera Gamble, gambling her thoughts on Season 4.

Season 4 starts off with Dean being mysteriously pulled out of Hell by an unseen force. Dean has been gone for four months, and visits Sam and Bobby, who are also puzzled by his sudden resurrection. Dean, Sam and Bobby attempt to find what pulled him out, and enlist the help of a psychic known as Pamela Barnes. they managed to discover the name of the being, known as Castiel, but this comes at a price. The sight of Castiel burns Pamela's eyes out. The brothers attempts to find the being, which is then known that he is an angel. The brothers discover that he pulled Dean out of Hell, as God has work for him. We also see that something has happened to Sam in the past few months, as his abilities grow stronger, which means he can now exorcise demons. Dean and Sam face old enemies, as well as new ones, and make new friends such as Pamela and Chuck Shurley, a prophet for God. Dean and Sam continue their hunt for Lilith, as Castiel tells them she plans to open the 66 Seals to let Lucifer out of Hell. Dean confronts Sam of his actions after discovering what he has done, and discovers that Ruby is back in a different body. In the middle of the season, Sam and Dean locate a woman who hears the angels speak, but later discover that she is also an angel. The angels plan to kill her, but Sam and Dean want to help her. Deans discovers that Sam has been drinking demon blood, which makes him stronger. Sam is locked in Bobby's panic room, and Dean is also confronted by a demon, whom he later kills.

The season finale starts with Sam leaving Dean to kill Lilith with Ruby, and Dean trying to find and stop him, but Dean is kidnapped by the angels and is told that the Apocalypse must not be prevented, as it will cleanse the earth. Sam and Ruby locate Lilith, and Sam kills her, until Ruby reveals that Lilith's death is the final seal. Azazel's intentions are finally revealed, as he was to have a special child that would open Lucifer's prison and become Lucifer's vessel. Ruby betrays Sam and tells him that she was working for Lilith all along, and Lilith was the only one who knew. Dean appears, and kills Ruby with her own knife, and the doors close as Lucifer's prison opens.

Season 5
"And when Palpy the Devil touches down we're talking four Horsemen, fiery skies"

- Zachariah

This season picks up where the last one left off. Dean and Sam reconcile as the prison opens, and prepare to die, but they are soon pulled out onto a plane. Sam and Dean encounter Chuck who tells them that Castiel has been blown to pieces. They re-encounter an old enemy, known as Meg Masters from season 1, who threatens them, and Bobby is with them, as he is possessed. Bobby saves Sam and Dean by stabbing himself. During the first episode, it is revealed that there is a weapon that can stop the Apocalypse, Micheals sword. But soon the Zachariah reveals that Dean is the vessel to the Michael the Archangel. Castiel appears, revived and stops Zachariah. Meanwhile, a man whose family has been killed is stalked by Lucifer, who wants to use the man as a vessel.

During this season Dean and Sam encounter the Four Horsemen of the Apocalypse- War, Famine, Pestilence, and Death. During season 5, for two episodes, Sam and Dean part ways, only to be back together after Dean is transported to the future where he learns that the world is in ruins and Sam has given into Lucifer's demands, essentially resulting in Lucifer himself possessing Sam's body.

Sam also discovers that he is Lucifer's true vessel, and Sam and Dean set out to stop Lucifer and Michael, and both agree they won't be vessels. Sam and Dean encounter new enemies, such as new angels, and witches, as well as ghosts. During the season, Dean and Sam are killed and sent to Heaven, and they encounter their half-brother for a second time, who is Michael's new vessel. Sam and Dean successfully get the horsemen's rings, after a third meeting with the Trickster, now known as the Archangel Gabriel. The brothers then agree that Sam says yes so he can get close enough to trap Lucifer in Hell, although Sam will be trapped forever as well. The season finale focuses on Sam saying yes to Lucifer, so they can trick him into the portal, Although Lucifer tricks them and hides the rings. Chuck tells the story of the Impala and the adventures with Sam and Dean. Sam is possessed by Lucifer, and Adam is possessed by Michael. They begin to fight in the graveyard, until Dean intervenes with Castiel and Bobby. Castiel temporarily forces Michael away with a holy fire molotov, and an angry Lucifer kills him. Lucifer beats Dean, badly injuring him, but Bobby shoots a him with the Colt. Lucifer snaps his neck, and as Sam is about to hit Dean again, he remembers the toy soldier in his car. Michael reappears, and Sam gains consciousness and traps he, Lucifer, Michael and Adam into the pit, which closes up. Deans is distraught, and Castiel reappears, healing Dean and reviving Bobby, thanks to God reviving him again. Dean and Bobby depart, and Dean travels to Lisa's house, where he sits with them to have dinner. Chuck disappears into thin air mysteriously. As a distraught Dean sits down to dinner with Lisa and Ben, Sam watches from outside, as a lamp post flickers out, implying if he is Sam or Lucifer.

Season 6
"The creepy and the cooky, mysterious and spooky, altogether ooky, the Winchester family!"

- Season 6's premise

This season is set a year after season 5. This season starts with Dean living with Lisa and Ben, and lives a normal life. He no longer uses his Impala, and no longer hunts demons or other creatures. Dean is poisoned by a Djinn, after hallucinating about Azazel. Sam saves Dean from his poison, and Dean wakes up in a dark room. Sam is now living a full hunter life. After a brief meeting with his maternal family, the Campbells, including his grandfather, Samuel Campbell. Dean does join Sam eventually, and Castiel comes shortly after. Dean begins to notice Sam acting differently, and they eventually find out that Sam doesn't have a soul. His soul is in the cage with Lucifer and Michael. So they begin to hunt for Sam's soul, and Crowley comes along and tells them that he is responsible for bringing Sam back. With this, they begin to work for Crowley, until they confront him and Castiel burns his bones. Dean later makes a deal with death to get Sam's soul back, and this sends Sam into a week long coma. When he wakes up, he doesn't remember what happened when he was soulless. He does find out about it from Castiel. After that Dean is forced to break ties with Lisa and Ben, and Sam remembers a bit of hell. Not to mention Balthazar, the rogue angel sends them into an alternative reality. Later on, they face the Mother of All, and Dean defeats her, after she reveals that Crowley is alive. So they begin to look for Crowley, only to find out that Castiel is working with him.

Then Crowley kidnaps Ben and Lisa in order to make Dean stop. Dean goes out of his mind looking for them and thanks to Balthazar, he finds them. When he gets there, he finds Lisa possessed by a demon and is forced to exorcise it despite it injuring her body. Unable to put them into any danger, Dean asks Castiel to erase Lisa and Ben's memory of him.

Castiel does the unthinkable and breaks down Sam's wall inside his head in order to distract Dean. While Sam does battle in his head, Castiel betrays Crowley and Balthazar brings Dean Castiel's location. Unfortunately, Castiel, having discovered that Balthazar has betrayed soon kills his former friend with an angel blade.

So Dean and Bobby head to Castiel's location with Sam later joining them, only for them to discover a shocking and horrifying truth: Castiel is now the new God.

Season 7
After declaring himself God, Castiel goes forth to try and punish all the wrongdoers in the world, garnering attention. Very quickly though, he discovers that he had absorbed Leviathan as well who are breaking free. Sam and Dean manage to return the Purgatory souls but fail to return the Leviathans who seemingly kill Castiel before vanishing. The Leviathans inhabit the bodies of many different people around the world, with Sam and Dean learning their weakness Borax, though it has minimum effectiveness on the Leviathan leader, Dick Roman. After Roman kills Bobby, Dean becomes obsessed with taking the Leviathans down and learns of a facility they are making, only to learn it is a facility to cure cancer as one Leviathan puts it: "We're only here to help". The spirit of Bobby later confirms that while they are curing disease, they are doing it as part of their grand plan to turn humanity into the perfect food source. With the help of Castiel, the brothers learn that the only way to kill the Leviathans is with the "bone of a righteous mortal washed in the three bloods of the fallen" and set out to find those three bloods. Eventually Dean and Castiel kill Dick, but are dragged into Purgatory as a result while Sam is left alone to deal with Crowley, who plans to rise to power now that the Leviathans are disorganized.

Key plot points presented in the season were Sam struggling with the constant hallucinations of Lucifer and the ghost of Bobby "haunting" Sam and Dean through his alcohol flask. Bobby's rage towards Dick Roman slowly causes him to become a vengeful spirit, and Sam and Dean trying to deal with this fact ultimately leads them to burn his flask at his request, destroying Bobby.

Season 8
The ferocious beasts, called the Leviathan, are effectively apprehended, by the team effort of the Winchesters, Castiel, and Meg, by the death of their leader, Dick Roman. Dick, God's first Leviathan, is killed by Dean, with the Bone of a Righteous Mortal Washed in the Three Bloods of the Fallen, the only implement in existence that can slay the Leviathan. The "kick" of the weapon, as Crowley calls it, sends Dean and Castiel to Purgatory - the realm where monsters prey on each other for eternity. There, Dean and Castiel team up with a vampire named Benny, and the three seek a portal, which can be accessed by humans, as a way out.

Much of the season involved the Hell Trials. These trials were designed by God to close the gates of Hell forever. These included:

The first two were successfully completed by Sam and the third was almost to be done, when Sam was stopped by Dean. It seemed that the Scribe, Metatron failed to mention that Sam would die if he completed the third trial.
 * 1) Killing a Hellhound
 * 2) Freeing an innocent soul from Hell
 * 3) Curing a demon.

Meanwhile, Castiel became an unwilling pawn in the hands of Metatron. Castiel thought that completing the Heaven trials would lock the angels in Heaven and prevent their power struggle from reaching Earth. Instead Metatron banished every angel (except himself) to Earth, to live as humans.

It is for the first time, the brothers let monsters live, believing them to be capable of change, just like humans. Benny, a vampire and Kate, a werewolf were spared the brothers' wrath. Unfortunately, Benny had to be killed to save Sam in Purgatory.

Season 9
Angels are on Earth, having fallen from Heaven in the last season by Metatron's evil schemes. Angels are amassing and possessing hosts. Meanwhile, the demon Abaddon breaks out of Hell and possesses numerous militia with her demons, and starts a war against Heaven and Earth. The angels are warring against each other, having had their wings burned off in their falls, and are unsure of what to do or who to follow. Metatron appears to Castiel and other angels, sending angelic hitmen after the brothers. Sam is tricked by Dean into letting the angel Gadreel possess him, in the hopes that Gadreel will heal Sam's internal wounds caused by the Trials. Meanwhile, Dean and Crowley track down Cain, who gives Dean his mark. Dean then tracks down the First Blade, which is the only weapon capable of killing Abaddon. Dean is later stabbed to death while fighting Metatron, but the Mark of Cain revives him as a Knight of Hell. They also manage to find a way to open Heaven again for the angels - for the Cube of Metatron which opens a portal to Heaven even when sealed. On Earth, Metatron is becoming far more arrogant and believes he is God. He says he will be called "X". Metatron goes around healing people and performing "miracles" to "prove" he is God. He converts an angelic faction, but Castiel fights him, and tricks him into admitting his desires to enslave all angels which every single angel on Earth hears, and they run towards Metatron and shackle him in anger. Castiel imprisons Metatron in Heaven's dungeon, and temporary order is restored to Heaven. They also manage to find a way to open Heaven again for the angels - for the Cube of Metatron which opens a portal to Heaven even when sealed.

Season 10
Dean is with Crowley and Crowley suggests they take over Hell and revamp it to Crowley's deires. However Dean is not happy to be bossed about by the King of Hell and he suggests that they stop making deals with human clients. Crowley is always humiliated by Dean, and Crowley keeps getting threatening phone calls from Sam, who says he'll avenge Dean and kill Crowley. Finally confronting the demonic Dean, Sam tries to reason with his monstrous brother but Dean refuses to make any contact. Sam and Castiel team up to cure Dean, which is successful. Dean learns Cain is on a murder spree, his first demon killing in season 9 in a hundred years bought up a lust for violence. Cain fights with Dean, and eventually Dean disarms Cain (literally) and kills him. Dean and Sam fight many more monsters, such as the goddess Calliope, who is attracted to a school show of Chuck's Supernatural books. Castiel gets his grace back, Metatron becomes human, Charlie finds the book of the damned, and Sam goes behind Dean's back to remove Mark of Cain, unintentionally releasing the Darkness, and Dean kills Death.

Season 11
The Darkness, an ancient force which predates even God and the Archangels, is released, and takes the form of a gigantic cloud of black smoke like a tornado descending on the Winchesters, who are unable to move their Impala. However, the Darkness appears as a beautiful ageless woman named "Amara" and she tells Dean that wherever they go, they will be bound, and she wants to repay him for saving her from imprisonment. The Darkness then sets off to rebuild her strength, and infects humanity with a Darkness-based disease. The surviving, uninfected humans gather weapons to fight off the infected humans, and a baby named Amara is said to be the Darkness incarnate. Crowley escapes from Castiel's bewitched attack by smoking out of his vessel and one of his demons tells him that Michael and Lucifer are screaming in their Cage because they know the Darkness is free. Dean and Sam search for a cure for the infected humans, and find the answers in The Bible. Meanwhile, the Amara form of the Darkness is eternally hungry, and eating human souls. She is so cruel she leaves humans alive but soulless, then kills them. The Darkness ages from a young girl to a teenage girl and then she gives the world a cruel smirk before setting off to finalize her endgame.

Monsters and Creatures

 * Angels
 * Archangels
 * Grigori
 * Rit Zien
 * Seraphim
 * Reapers
 * Regular Angels
 * Cherubim
 * Nephilim (half human)
 * Demons
 * White-eyed Demons
 * Princes of Hell
 * Knights of Hell
 * Multicolor-eyed Demon
 * Crossroad Demons
 * Green-eyed Demons  (mentioned only)
 * Black-eyed Demons
 * Seven Deadly Sins
 * Disaster Demons
 * Tempter Demons
 * Acheri
 * Daeva
 * Croatoan Virus
 * Cambion (half human)
 * Ghosts
 * Violent Spirits
 * Specter
 * Death Omen
 * Death Echo
 * Poltergeists
 * Vengeful Spirits
 * Buruburu
 * Revenant
 * Woman in White
 * Myling (mentioned only)
 * Leviathans
 * Part-Leviathan
 * Humans
 * Psychics
 * Elementals  (mentioned only)
 * Special Children
 * Witches
 * Prophets
 * Deities
 * Tricksters  (mentioned only)
 * Vanirs
 * Hold Nickar
 * Titans
 * Fairies
 * Leprechauns
 * Tinks
 * Elves
 * Redcaps
 * Banshee
 * Fairy Witches
 * Flying Monkeys
 * Tooth Fairies  (mentioned only)
 * Sprite (mentioned only)
 * Spriggans  (mentioned only)
 * Boggarts  (mentioned only)
 * Brownies  (mentioned only)
 * Gnomes  (mentioned only)
 * Goblins  (mentioned only)
 * Constructs
 * ​Golem
 * Tulpa
 * Twigs and Twine Clone
 * Four Horsemen of the Apocalypse
 * God
 * The Darkness
 * Cosmic Entity
 * Hellhounds
 * Zombies
 * Aliens  (mentioned only)
 * Monsters
 * Alphas
 * Amazons
 * Arachne
 * Asuras  (mentioned only)
 * Baku  (mentioned only)
 * Basilisk  (mentioned only)
 * Big Foot  (mentioned only)
 * Bisaans
 * Black Dogs  (mentioned only)
 * Boogieman  (mentioned only)
 * Changeling
 * Chupacabra  (mentioned only)
 * Crocotta
 * Djinn
 * Dragons
 * Dwarves  (mentioned only)
 * Edward Trenton's species
 * Eleanor Visyak's species
 * Familiar
 * Frost Giants  (mentioned only)
 * Ghoul
 * Gorilla-wolves
 * Giants  (mentioned only)
 * Giant Turtle  (mentioned only)
 * Gorgon  (mentioned only)
 * Griffin  (mentioned only)
 * Hobbits  (mentioned only)
 * Jefferson Starships
 * Jersey Devil  (mentioned only)
 * Khan worm
 * Kitsune
 * Kraken  (mentioned only)
 * Lamia  (mentioned only)
 * Leszy  (mentioned only)
 * Loch Ness Monster  (mentioned only)
 * Minotaur  (mentioned only)
 * Nachzehrer
 * Ōkami
 * Phoenix
 * Pishtaco
 * Phantom Gasser  (mentioned only)
 * Qareen
 * Rakshasa
 * Rawhead
 * Rugaru
 * Shapeshifter
 * Shedim
 * Shōjō
 * Shtriga
 * Siren
 * Skinwalker
 * Smurfs  (mentioned only)
 * Soul Eater
 * Shōjō
 * Spring-Heeled Jack  (mentioned only)
 * Succubi  (mentioned only)
 * Trolls  (mentioned only)
 * Unicorns  (mentioned only)
 * Vampire
 * Vetala
 * Werewolf
 * Wendigos
 * Whispers  (mentioned only)
 * Whore of Babylon
 * Wraith
 * Zanna

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Trivia

 * Originally Jensen Ackles auditioned for the role of Sam Winchester. When Jared Padalecki came in and read for Sam a slight recasting was done. Producers called Jensen and asked if he'd rather use his charm for Dean, saying he was the Han Solo character of the duo and what kid didn't grow up wanting to be Han Solo? Jensen accepted. It became known that he was previously interested in that role, because Dean was funny.
 * Many episodes are either named after movies ("Children Shouldn't Play with Dead Things", "The Usual Suspects", "I Know What You Did Last Summer", “There’s Something About Mary”) or classic rock songs ("In My Time of Dying", "Born Under a Bad Sign", "What is and What Should Never Be", "Sympathy For The Devil", "When The Levee Breaks").
 * Sam's birthday is May 2nd (born in 1983). In 2007, this also became the birthday of executive producer and creator Eric Kripke's son, which Kripke describes as "creepy".
 * All the ancient deities which predate God or are at least as old as God - Eve, the Darkness, Kali, the Whore of Babylon, Leshi and Lilith all appear as females. Interestingly, many of these are rivals of God.
 * The original concept had a reporter going to investigate the urban legends and writing about them in his column instead of having the Dean and Sam concept.
 * Producers considered several methods of motivating Sam to take to the road with Dean. Turning Jessica evil was an option briefly, but in taking a page from Star Wars it was decided that her death would be the ultimate motivation for leaving Stanford.
 * Every season ends with a cliffhanger:
 * Season 1: After they fail in killing the Yellow-Eyed demon, the Winchesters are in a severe car accident and left unconscious.
 * Season 2: Though the brothers have finally killed the Yellow-Eyed demon, Dean had earlier sold his soul to save his dead brother, and will go to hell in one year.
 * Season 3: Dean's contract is up and he is mauled to death by hellhounds; he is last seen suffering torment in hell.
 * Season 4: Having made bad choices, Sam makes his biggest one by unwittingly completing the final seal that will release Lucifer from his cage and start the apocalypse; he and Dean are left to watch as the devil himself rises.
 * Season 5: In order to avert the apocalypse, Sam is forced to let Lucifer possess him and lock themselves in hell. However, as Dean goes to live a normal life, Sam is shown to have escaped hell somehow.
 * Season 6: His relationship with the Winchesters and Bobby Singer in a bad place, the angel Castiel absorbs the power of souls and, becoming power-hungry, threatens his former friends if they do not submit to him.
 * Season 7: Just as they have defeated Dick Roman, Dean and Castiel are caught in an explosion that sends them to purgatory, unbeknownst to Sam.
 * Season 8: Just as Sam prepares to close the gates of Hell (trapping demons there for eternity), Dean convinces him not to as it is fatal. At the same time, Castiel unintentionally helps the rogue angel Metatron cast a banishing spell on the angels, expelling them from heaven. The last few images are angels falling.
 * Season 9: When trying to kill Metatron, Dean ends up being killed by him, however, when Sam tries to summon Crowley for him to fix Dean, the demon is in Dean's room, where the hunter's body is lying in bed, and put the First Blade in Dean's hands and then he wakes up as a demon. In Heaven, after defeating Metatron and arresting him in Heaven's dungeon, Castiel faces the prospect of dying when his grace burns out unless he replenishes it.
 * Season 10: Rowena succeeded in performing a spell to remove the Mark of Cain from Dean's arm. However, it caused the Darkness to be released once more. Crowley was turned against Castiel by one of Rowena's spells, and Castiel brutally attacked Crowley. Dean and Sam are engulfed by the Darkness.
 * Season 11: After Dean helped The Darkness reconcile with God the former resurrected Deans mother Mary Winchester and teleported him to her while Sam encountered Toni a Men of Letters member from London in the bunker who pulled a gun on Sam. Sam called her bluff saying she wouldn't fire it at him but fired a shot at him while the impact of the bullet was not shown on-screen.
 * Season 12: After Crowley sacrifices himself, Castiel is killed by Lucifer. Attempting to injure the Devil, Mary starts punching him and falls into a portal to an alternate universe. The portal immediately closes, leaving Mary and Lucifer trapped. Collapsing to his knees, Dean mourns the loss of Castiel. Sam enters the house to discover the recently-born, but already-fully-grown son of Lucifer, Jack.

Others

 * Supernatural features several pop references to contemporary and iconic shows, literature and artists.