God

God, also known as The Creator, The Lord, Heavenly Father, the Man Upstairs, created the entire universe, and the Natural Order than even Death must follow. He always stays behind the scenes, not making his presence known publicly.

Having created everything, he has existed since the beginning of time alongside Death. Very soon afterwards, he made Heaven and then the Earth, he then made the first beasts (the Leviathans), then the five archangels, and then created the collectively other species of angels like the seraphs, regular angels and cupids to dwell in Heaven.

Notable Creation
While God is the Creator of the Universe, he has created many notable beings and things, which were specifically created in this order.
 * Heaven
 * Leviathans
 * Purgatory
 * Archangels
 * Earth
 * Angels (All collectively species under this title that isn't archangel.)
 * Hell
 * Humans

Powers and Abilities

 * Omnipotence - He can do anything and has easily created things, varying from the universe at large, the Leviathans, and humans to Angels to Archangels. As put by Lucifer, "no one makes Dad do anything". God can open Lucifer's Cage without the Four Horsemen rings, as Dean incorrectly suspected it was God who got Sam out. He created Purgatory, Lucifer's Cage, and Hell to imprision his most dangerous creations, the Leviathan, and Lucifer respectively. Despite Castiel's disobedience, he chose to educate and forgive his young son instead, by healing/resurrecting him after his death at the hands of Raphael, and Lucifer. God is known to be all-powerful and perfect and Death even stated that Castiel powered with 30-40 million souls was no God.
 * Omniscience - God has unlimited understanding, knowledge and awareness of everything and the future. Joshua says, "He knows already, everything you want to tell him", to the Winchesters. Although Death claims that neither can remember which of them is older.
 * Omnipresence - God is everywhere in the universe at once, however his main being, is somewhere on Eart
 * Immortality - He is truly immortal and is unaffected by time, disease, age, fatigue, hunger, or pain. Death claims that in the end he will reap God too, but this is unconfirmed.
 * Teleportation - God can teleport himself and others anywhere he wants in the universe. For instance, he teleported Dean and Sam out of Lucifer's presence.
 * Telepathy- God talks to the Angel joshua and tells him things sometimes.
 * Resurrection - Due to his lack of interaction or intervention, he does not do this often. However, he is known to have resurrected Castiel at least two separate times. God can bring anyone or anything back to life.
 * Healing - God, indirectly credited for it by Sam, cleared or "flushed" Sam right out, alleviating demon blood from within him that he had consumed.

Physical Appearance
It's the visage of God, and has only been seen by his Five sons the archangels, Jesus and possibly the Fates and Death. It was said that Dean's Amulet can detect the presence of God, however Joshua thinks otherwise as God can only be found if he wants to. Often when God does intervene, it's done behind the scenes, without physical interaction. Anna mentions that out of all the Host of Heaven, only four of them have seen God; this has been shown to be untrue, or at least an exaggeration, as at least 5 heavenly beings have been known to see God: Michael, Lucifer, Gabriel, Raphael, and Metatron.

Early history
In the beginning, God existed. He created Heaven, a place where he and his angels and noble souls would eventually reside. He then created the first beasts, called Leviathans. But seeing the potential danger they could cause, he decided to lock them away in Purgatory. Then he created the archangels named Michael, Lucifer, Raphael, Gabriel, and Metatron after who He created angels, seraphs, and cupids. The angels and archangels call God their father and existed only to glorify Him.

Soon, God created humans. He asked all the angels to bow down to the humans as his greatest creations, and present more compassion towards the humans than to him. Lucifer soon became envious, as he was the favorite son of Heaven, and saw that humans were flawed and murderous (with both Death and Gabriel describing it as essentially being a "temper tantrum" as humanity had replaced him in the foremost of God's affections). Faced with this situation, Lucifer became increasingly more and more prideful. He convinced one-third of all of Heavens Host to rebel with him. He went to Michael and asked him to stand with him, but Michael refused. A great and bloody battle ensued in Heaven where angels warred against angels. Michael and Lucifer fought in a cataclysmic battle until eventually, God caused the battle to cease by casting all the rebels, including Lucifer, out of Heaven. Out of anger against God, Lucifer corrupted a human soul later known as Lilith into the first demon. God had Michael cast him into Hell (to be specific, Lucifer's Cage). God continued to watch over and protect all his creation and children against anything that might hope to corrupt it, although it is inferred throughout the series that he is both miserable and lonely, as he feels guilt for letting Lucifer be corrupted and that few can sympathize with his feelings, save for those such as the angel Joshua, a fellow gardener. Though when talking to Michael in "Swan Song" Lucifer believes that since God made everything "He made me who I am. God wanted the Devil."

Season 4
In a claim by Castiel, God is mentioned as having ordered Castiel to raise Dean, in "Lazarus Rising".

Uriel, at some point in time, bears disbelief in God, saying, "there is no God" among other things.

Climactically, when Dean wonders where God is, Zachariah responds with, "God has left the building".

Season 5
In "Sympathy for the Devil", Dean and Sam are trapped in the chapel of St. Mary's Convent while Lucifer is about to emerge from his cage. Suddenly, everything becomes bright and the brothers find themselves on an airplane simultaneously passing over Ilchester, Maryland. It is later revealed by Joshua that they were put there by none other than God himself. Later, when Dean questions Sam about how he's feeling, Sam notes that it's weird because he's not shaking and doesn't have a fever like he normally does after drinking demon blood. Sam gives the credit to whomever saved them and put them on the plane.

In "Dark Side of the Moon" it is confirmed by Joshua that God put them on the plane, granted both brothers salvation in Heaven, resurrected Castiel, and cured Sam, which Joshua comments on being more than He has done in a long time. The angel reveals he has been on Earth for some time and is lonely, but still speaks to him from afar, as He feels that Joshua can sympathize with His feelings "gardnener to gardnener". Joshua also relates a message from God to the Winchesters: "Back off." He feels that the Apocalypse is not His problem and that He has intervened on their behalf enough for them to solve the problem of the Apocalypse themselves. He also reveals that he intends to let them keep their memories of their time in Heaven at God's order, as God wants them to remember this encounter.

Chuck is God?
At the end of the season finale Swan Song, the prophet Chuck Shurley is seen disappearing after finishing the last book of the Supernatural series(Though it is never revisited in the show, the actor and series creator Eric Kripke have both confirmed that Chuck was indeed God, and was acting from behind the scenes in order to preserve free will).

Season 6
In "The Third Man", Castiel states that God did not let Sam out of Hell, although he, obviously, has the "muscle". Since "Swan Song" no one has seen any sign of him (most likely even before as none of the angels knew where he was on Earth when he originally left Heaven.) Even Balthazar states "Dad, isn't coming back." Raphael later references him when battling Castiel stating "Somehow I don't think God will be bringing you back this time".

In "The Man Who Would Be King", Castiel is desperate and morally ambiguous, and tells God the story of how he attempted to free Sam from Lucifer's Cage, made a deal with Crowley to partner up with him to find Purgatory, and started the Civil War in Heaven against Raphael. He prays to God to give him a sign, to which he receives no response.

In "The Man Who Knew Too Much," Castiel absorbs millions of souls to gain power - he claims the souls as his own, and is adamant on not surrendering their power. When Sam arrives and stabs Castiel, the Angel Blade doesn't kill him, proving that he is not a regular angel anymore. He proclaims himself as the new God, and gives the Winchesters and Bobby an ultimatum: bow down to him or he will destroy them.

Season 7
In "Meet The New Boss", Castiel enters a church and kills a bigoted, hypocritical pastor by making him choke on his own tongue. Moments after doing this, he hears a voice speaking to him from afar, causing him to pause and grip the side of a pew. Upon hearing the voice, he looks at a stained glass window depicting Jesus (a physical manifestation of God) for a moment, before continuing onward and replacing the image in the stained glass window with his own. Later, while arguing with Death, Castiel asks Death where God is. Death does not answer.

Near the end of Season 7, an ancient tablet sought by Dick Roman and subsequently stolen by the Winchesters is revealed to be one of the records of "the Word of God", a message left by God himself and dictated by his personal stenographer, Metatron, when creation was being formed. This particular record acts as an "in case of emergency" message relating to the Leviathans, whom God had locked away in Purgatory before the dawn of mankind. This message reveals that God left the knowledge of how to destroy the Leviathans on this tablet in the event that they should ever escape from Purgatory, and that the only way to destroy them is with a means of killing the Leviathans.

Season 8
After escaping Purgatory, Dean says the designer (God) of the box (Purgatory) didn't want him in there anymore than he did, so he created an escape route which only works for humans and any Angels.