Dean and Castiel

Dean Winchesterand Castiel initially had a working relationship, as well as mutual respect for each other. Over time, Dean begins to see Castiel as part of the family. Castiel respects Dean and helps him whenever he can. It is Dean who gives Castiel the nickname, "Cas", which is adopted by many other characters. When Castiel's betrayal is found out, Dean and Castiel's relationship is severely strained.

Background
When Dean was in Hell, it was Castiel who pulled Dean out and brought him back to life, four months after Dean's soul was dragged to Hell by hellhounds and his physical body died. From that Dean bears the mark of Castiel on his shoulder. When Dean returns he doesn't know it was Castiel who brought him back.

But after finding out that it wasn't Sam, Dean looks for further answers and gets help from a physic Pamela. From her Dean finds out Castiel's name. Before meeting physically meeting, Castiel tries to talk to Dean in hopes that Dean might be able to hear his voice. Unfortunately it isn't so and Dean's head hurts when Castiel speaks.

Season 4
"Who are you? Castiel. Yeah, I figured that much, I mean what are you? I'm an Angel of the Lord. Get the hell out of here. There's no such thing. This is your problem, Dean. You have no faith."

- Dean and Castiel Castiel first physically appears when Dean summons Castiel to a barn where he and Bobby Singer have traps all kinds around the room; however, the traps and guns that Dean and Bobby use have no effect on Castiel. Dean asks Castiel what he is, Castiel answers that he is an angel of the lord.

Dean initially refuses to believe this, though he eventually comes around. Castiel is next seen when he comes to Dean after the rising of the witnesses. Dean asks why the angels didn't come to help, and Castiel responds by saying angels have better things to do than "perch on [Dean's] shoulder".

When Dean continues to be rude, Castiel loses his temper, and tells Dean that, he should show him some respect because as Castiel was the one who took Dean out of Hell, Castiel can just easily change his mind and throw him back in.

Castiel comes to Dean later on to send Dean to stop something in the past (In The Beginning), leading Dean to assume that he has to kill the Yellow Eyed Demon. When he fails, and in fact indirectly assists in the future being set, Castiel takes him back to the future, and uses the experience as an example of destiny.

In It's the Great Pumpkin, Sam Winchester, Castiel comes to Dean again with Uriel, telling Dean they plan to destroy the town to protect the seal, and that he and Sam should vacate. Dean is outraged that they are even considering the plan, and tells them he's not going anywhere, and that he'll stop the seal from breaking himself. Castiel later reveals to Dean that their true orders were to follow Dean's commands, much to Dean's surprise. In the same conversation, Castiel admits to Dean that he has doubts about the orders of Heaven, and tells the older Winchester that he doesn't envy Dean's fate.

The next time Dean sees Castiel iss near the end of I Know What You Did Last Summer, when the angels come for Anna. Despite Castiel being part of the team coming to take and kill Anna, Dean saves Cas from Alastiar in Heaven and Hell. Castiel repays him by stopping Uriel.

In On The Head Of A Pin, Castiel recruits Dean to help them find out who is killing angels. They want Dean to torture Alastair for information. When Dean begs Castiel not to make him open that door, Castiel admits that he's been demoted, primarily due to his affection for Dean. Castiel tells Dean he wishes he didn't have to ask him to do this, but it is necessary. Castiel manages to talk Dean into doing the torture, but clearly regrets it. When Alastair overpowers Dean, Castiel comes to Dean's rescue. Castiel is also overpowered, but is saved by Sam.

Castiel stops by Dean's hospital room and talks to Sam a bit before investigating why the devil's trap broke. Castiel then talks to Dean. By the end of the conversation, Castiel has admitted that it was Dean who began the breaking of the seals, the fall of a righteous man in Hell being the first of the seals.

In The Monster at the End of This Book, Dean asks for Castiel's help when the threat of Lilith coming for Sam. When Castiel tells Dean he can't, Dean tells Castiel to never ask for help from him again. However, Castiel slyly goes into great detail about exactly why he can't help, giving Dean the knowledge necessary to stop Lilith.

Although Castiel finds out something and attempts to get this information to Dean. Unfortunately Castiel is dragged back to heaven in The Rapture. When he returns, he tells Dean that he doesn't take orders from Dean. Dean is not sure how to deal with Castiel's new attitude. But he still asks for help when Sam is detoxing from Demon. Castiel makes Dean swear himself to the service of heaven and makes him wait till they call him in When the Levee Breaks.

In Lucifer Rising, they call on Dean, and he later finds out they don't intend to stop the breaking of the seals. Castiel is clearly conflicted about the revelation, and is unable to look Dean in the eye. Castiel refuses to allow Dean to see Sam, and traps Dean in the Beautiful Room. Castiel returns later when Dean tries to call Sam, notifying him that he's "outside his service range."

When Dean asks Castiel why he came, Castiel attempts to mend fences. Dean responds by punching the angel (though this hurts Dean's hand more than Castiel's face). When Dean demands to know why they would do this, Castiel tells Dean, "I see nothing but pain here! I see inside you – I see your guilt, your anger, confusion… in paradise, all is forgiven. You’ll be at peace. Even with Sam." Dean is shocked by this and tells Castiel to shove it. Dean asks Castiel what happened, and reminds him that he was going to help him before. Castiel asks what Dean would have him do. Dean tries to talk him into helping, but Castiel refuses, though it's plain he's anything but content with his decision.

Castiel ultimately decides to help the Winchesters, and comes back. He helps Dean get away by creating a angel banishing sigil with his blood, and tells Dean that Lilith is the final seal, and that they have to stop Sam from killing her. He transports them to Chuck's home to find the location of Sam and Lilith, but is attacked by Raphael, the archangel in charge of protecting Chuck. He transports Dean to the site and makes his final stand.

Season 5
"You know, it's kind of funny, talking to a messenger of God on a cell phone. It's, you know, like watching a Hell's Angel ride a moped. This isn't funny. Dean. The voice says I'm almost out of minutes."

- Dean and Castiel

Castiel is resurected by God (it is believed) and comes to Dean's rescue when Zachariah attempts to force Dean to say yes to Michael. Cas makes Zachariah return Sam and Dean to normal, and scares the angel off. When Dean questions how Castiel could be there, Cas admits that he's just as confused as they are, and then uses his power to carve Enochian symbols into the ribcages of Sam and Dean, hiding them from all angelic beings.

Castiel briefly returns to ask Dean for his necklace, as it apparently has the power to find God. Dean initially refuses and mocks Castiel's plan to find God. Castiel quickly looses his temper, and tells Dean under no uncertain terms that after all he, Castiel, has done for the Winchesters, he can keep his opinions to himself and give him the necklace.

In Free To Be You and Me, Castiel and Dean team up to look for the archangel who killed Castiel. When asking for Dean's help, Castiel tells Dean that Dean is the only one who will help Castiel, implying that Dean is the only friend Castiel can trust. They first hit the police station and question the police man who wtinessed the archangel. Castiel mentions angels and demons but Dean quickly covers for them. They find Raphael's empty vessel and Castiel gets ready to face him, though he admits that the confrontation is likely to end with Castiel dead.

While waiting for the showdown, Dean takes Castiel to a brothel so Cas won't "die a virgin". Dean, entirely in his element, is amused at Castiel's clear terror and discomfort at their surroundings. Dean attempts to set Castiel up with a young prostitute, but it ends badly when Castiel assures the woman that it wasn't her fault her father left, terrifying and enraging her. Dean and Castiel both hurry out, though Dean is in stitches over the situation.

Castiel and Raphael confront each other later, with Raphael telling Castiel that God is dead. Castiel refuses to believe this, and leaves Raphael trapped in a ring of holy fire. While Dean attempts to cheer Castiel up, he ultimately runs him off by blustering that he enjoys being alone, having parted ways with Sam earlier.

Castiel continues searching for God and helping Dean. When Castiel finds out Anna is back, and that she is after Sam and Dean's parents, he plans on going into the past to stop her. Though initially reluctant to take the Winchester brothers with him, he ultimately agrees. He is severely weakened by the trip, passing out and gagging on blood when they arrive in the 70s, and then falling into a brief coma when he returns to the present.

When a case Dean and Sam are working on leads them to hearts with Enochian sigils carved on them, Dean calls Castiel in for assistance. While they initially believe that a rogue cupid is killing people, the true culprit, Famine, affects Castiel through his vessel, Jimmy Novak, who apparently has a craving for hamburgers. Castiel stuffs himself throughout the episode, much to Dean's disgust, and asks Dean why he hasn't been put under Famine's curse. When Dean explains that he doesn't deny himself anything, Castiel asks, "So you're just well-adjusted?" The original plan to kill Famine was to send Castiel in; however, this ends badly when Castiel is distracted by a slab of raw ground beef. Later, after Famine is killed and Sam is locked up to go through detox, Castiel attempts to comfort Dean, though it doesn't appear to work.

When Sam and Dean go to Heaven, Castiel asks them to look for Joshua, as he may know where God is. They find Joshua and find out that God knows about Earth's problems and simply doesn't care. This hurts Castiel, who renounces his faith in God and disappears.

Following that, in 99 Problems, Castiel arrives on the scene drunk, short tempered, and bitter. He and Dean later have a heart-to-heart about poor fathers.

In Point of No Return, Dean attempts to say yes to Michael, which horrifies and enrages Castiel. They lock Dean in the panic room of Bobby's basement to stop him from leaving. The feelings of betrayal come to a head when Dean escapes Bobby's home by banishing Castiel and attempts to contact the angels. Castiel appears and beats Dean within an inch of his life, venting his frustration and hurt. He later goes on a suicide mission, stating that he would rather die than watch Dean crumble and fail.

Castiel later returns in Two Minutes to Midnight and apologizes to Dean for not having more faith in him. Dean forgives Cas, and they reconcile. However, Castiel admits that, technically, he is human, having depleted his "batteries" during his suicide mission. Despite this, Castiel still comes to Dean and Sam's rescue and cuts off Pestilence's finger.

In Swan Song, Castiel is shockingly human, displaying more emotion than ever. He appears during the fight between Michael and Lucifer, distracting them by throwing a molotov cocktail of holy fire at Michael. This allows Dean to try and get through to Sam, though it ends with an offended Lucifer causing Castiel to explode.

The angel is brought back after the battle, "new and improved", and heals Dean and brings back Bobby. Dean suggests that God wants Castiel to be the new leader of Heaven, though they part ways on a tense note.

Season 6
&nbsp "Dean and I do share a more profound bound. I wasn't going to mention it."

- Castiel

Castiel comes when Dean calls him in The Third Man. He mentions in this episode that he has more of a bond with Dean than Sam. Castiel helps Dean figure out its the staff of Moses doing the killing and the trail leads to a rogue angel and friend of Castiel, Balthazar.

Dean calls Castiel again when he's worried about Sam, but Castiel refused to answer unless it was connected to the war in Heaven, which angered Dean. When Castiel does show up, he dismisses Dean's theory that Lucifer still inside Sam. Castiel promises Dean to make some inquiries after telling him that he, Castiel, doesn't answer Dean's prayers when they're connected to Sam because he doesn't know how to help.

Dean later calls Castiel to check what wrong with Sam (Family Matters). Castiel reaches into Sam, and discovers that he doesn't have a soul, and explains that whoever brought Sam back left Sam's soul behind in the cage with Michael and Lucifer. When Dean questions whether soulless Sam is even still "Sam", Castiel admits that that's a good question.

In Caged Heat, Castiel exhibits more human urges, inadvertently watching porn and getting an erection from it, and later passionately kissing Meg, both to Dean's discomfort. Castiel warns Dean that bringing Sam's soul back could permanently damage the younger Winchester psychologically, but Dean remains firm on retrieving the soul. Castiel is banished with a sigil when they lay siege to Crowley's warehouse, but later returns with Crowley's bones, which he promptly incinerates when Crowley admits he can't retrieve Sam's soul from the cage. Later, when Castiel admits to Dean that he is on the loosing side of the civil war in Heaven, Dean assures his friend that if he needs help, all he has to do is ask.

When Sam gets his soul back, Dean calls Castiel to check on him. When Dean questioned Castiel on whether or not Sam will wake up, Castiel is curt with him, and berates Dean for not listening to him. When Dean reacts defensively, Castiel angrily tells him that Sam's soul felt "as if it was skinned alive", and tells Dean that if he wanted to kill his brother, he should have done it outright, making his stance on the matter clear.

When Castiel and Balthazar go back in time to stop the Titanic from sinking, Atropos, one of the three Fates, forces Castiel to capitulate and fix the timeline by threatening the Winchesters. He doesn't tell Dean or Sam the real reason for going back in time; while he really sent Balthazar so that they would have more souls for the war, he allows them to believe that Balthazar simply didn't like the movie, or Celine Dion.

Later, the Winchesters find a way to kill Eve, with the ashes of a phoenix. However, their call for Cas is answered by his lieutenant, Rachel, who promptly looses her temper with them after they insist on speaking with Castiel. Despite her passionate words on his behalf, Castiel appears and dismisses her, much to her chagrin. He agrees to help them go back to the Wild West area, and is the first to question Dean's choice of dress, asking if wearing a "blanket" was customary.

When the Winchester's search for Eve rapidly proves fruitless, Bobby suggests that Dean call Castiel. However, Castiel admits that he's had no luck either. When the Winchesters decide to track down a monster that is loyal to the cause, Castiel finds Lenore, a vampire that has had run-ins with the Winchesters before. After she tells them what she knows, she begs them to kill her, the call of the Mother forcing monsters to give into their baser natures. While the Winchesters are both reluctant, Castiel obliges. When they go to the town Lenore told them the Mother was in, Castiel is made powerless by her, much to Dean's irritation.

In The Man Who Would Be King, Castiel's betrayal is slowly becoming known Though Dean does not want to believe it, and desperately remains loyal to his friend. In the beginning prequel part of the episode, Castiel attempts to explain freedom to the angels (in hindsight, he describes the experience as being comparable to teaching poetry to fish, and cynically states that he should have told them that "freedom is a length of rope. God wants you to hang yourself with it). Raphael is less than enthused, and demands that Castiel show his support, though Castiel refuses when Raphael announces his intent to restart the Apocalypse. Castiel almost goes to Dean for help, but ultimately decides not to drag his friend into the mess, rationalizing that Dean has been through too much already. Crowley appears and, playing on the angel's new sense of pride, manages to strike a deal with Castiel: his help, and 50,000 souls upfront, in exchange for half the souls of Purgatory. Castiel agrees out of desperation, and while Crowley insists that keeping the Winchesters alive is dangerous, Castiel refuses to kill them, still considering himself their guardian angel. However, during this time, Castiel takes to spying on the Winchesters and Bobby, and later betrays this fact by referencing part of a conversation he'd overheard. This leads the others to realize that he is not to be trusted, and they capture him in a circle of holy fire. Dean takes it the hardest. Later, Castiel goes to Bobby's in an attempt to explain his actions, but refuses to back down, even when Dean threatens to fight back.

Despite this, Castiel still helps Dean in Let It Bleed. When Dean is about to be killed by a demon he's interrogating, Castiel steps in and saves him. Dean is still hurt by Castiel's betrayal, and reacts with hostility. Castiel tells Dean that he too considers them to be family, and tells Dean that, after all he, Castiel, as done for the Winchesters, Dean should trust him. Even when Dean says he can't, Castiel tells him that he will find Lisa and Ben. They part on a hostile note, with Dean telling Castiel that he doesn't want his help. Later, Castiel comes by Lisa's hospital room, and despite Dean's exhausted hostility, heals Lisa without prompting. Dean, though immensely grateful, states that it doesn't change the situation, a statement that Castiel regretfully agrees with. Dean asks for one more favor, which Castiel grants: the angel erases Ben and Lisa's memories of Dean.

Castiel later appears before Dean in The Man Who Knew Too Much. Dean is angry at Castiel when he appears after killing Dr. Visyak. Castiel tells Dean he no longer cares what he thinks, and is tired of getting his approval, but promises that if Dean doesn't fight anymore, Sam will be alright in the end. In an apparent attempt to distract Dean, Castiel breaks down the mental wall that stopped Sam from remembering his year without a soul or his soul's time in Hell.

After Castiel absorbs the souls of Purgatory, Dean tries to talk to Castiel to releasing them. Dean finishes his emotional plea by saying how Castiel was family once and if that still has any value to Cas, he will listen to Dean. Castiel mentions that Dean is afraid of his power (immediately implying that he isn't going to listen to Dean's plea), which is why Dean is being nice to Castiel.

Castiel informs Dean that he is no longer his family, that they never were family, and that he has no family. He proclaims himself to be the new, better God, and demands that they bow and proclaim loyalty and love, or be destroyed.

Alternative Reality
Dean gets sent back in time by Zachariah in The End. There Deans finds an a "zombieland" like world. Do Dean goes looking for familiar faces. Then Dean finds the rebel camps where he finds himself and Castiel. Although Castiel is not what he used to be. Dean is shocked by how lose Castiel is (Dean walks on Castiel preparing to have an orgy). Castiel also comments how he likes past Dean better. On the way to the battle field, Dean asks what happened to Castiel. Castiel replies life and the fact he's no longer an angel. When Castiel (past one) saves Dean, Dean tells Cas "Don't ever change."