Sam and Castiel

Sam Winchesterand Castiel have a working relationship along side a friendship. Although Sam's relationship isn't as great as Castiel has with Dean, but the two are still friends and respect each other. Although Sam and Castiel don't have very much contact with each other.

Like Dean, Sam call Castiel by the nickname Dean gave him, "Cas".

Background
Castiel and Sam don't meet for awhile, but they are both aware of each other's esistance. Sam hears about Castiel from Dean. Castiel just know about Sam and the fact that Sam was using his powers to excerise demons with this mind. Sam does want to meet Castiel, because Sam wants to meet an angel. The two do finally meet face to face in Its the Great Pumpkin, Sam Winchester.

Season 4
"Sam Winchester. The boy with the demon blood. Glad to hear you’ve… ceased your extracurricular activities."

- Castiel to Sam Sam and Castiel meet in Its the Great Pumpkin, Sam Winchester when Sam notices people in their motel room. Sam pulls a gun, but is stopped by Dean. Dean introduces Castiel to Sam. Sam stammers and offers Castiel his hand in greeting. Castiel looks at Sam's hand, unsure what do with it. Castiel does take Sam's hand and shakes in greeting. Castiel expresses the fact that hes glad Sam has stopped using his powers.

Then the angels reveal they plan to nuke the town, and Sam (as well as Dean) don't like this plan at all. Sam tries to talk the angels out of it by saying they can stop the witch before she summons. Castiels tells Sam and Dean they have their orders. Sam asks them arn't angel supposed to show mercy?

They meet again in Heaven and Hell, when Castiel comes for Anna. Sam asks Castiel why would they want to kill an innocent girl? Castiel responds by saying that Anna is far from innocent. Sam is confused by this. Uriel attacks when they continue refusing to give Anna to the angels. Sam asks Castiel to stop this, but Castiel merely knocks Sam out with a touch and heads to where Anna is. Then Castiel and Uriel are sent away by Anna. Because of what Castiel tells Sam, Sam starts to investigate Anna.

After saving Castiel in On The Head Of A Pin, Castiel comes to Dean's hospital where Sam is sitting beside his brother's bedside. Sam demands Castiel gets in there and heal Dean. Castiel tells Sam he can't. Sam argues that Cas and Uriel are the ones who put Dean in there all because they can't keep a simple devil's trap together. Castiel apologizes to Sam, unable to explain what happened. Sam snaps at Castiel, making Dean torture was for nothing. Its not the demons, but something else. Castiel brings up the possibility that Alastair was lying, Sam shoots it down. Castiel does believe Sam is right about this.

They don't see each other after that. Although in When the Levee Breaks, it is Castiel who lets Sam out of the panic room. It is believed that Castiel didn't want to let Sam out, but because of orders, Castiels does this. Castiel also aids Dean to get to Sam, so Dean can stop the breaking of the final seal.

Season 5
"You two need to be more careful."

- Castiel Castiel had now rebelled againist heaven and returns in Sympathy for the Devil and saves Sam and Dean. Cas forces Zachariah to put Sam back together. Castiel brands Sam's (and Dean's) ribs with Enochian sigil so no angel (including himself) can find Sam. Before Castiel leaves, Sam asks him how is Castiel is alive. Castiel disappears before giving Sam an answer.

In I Believe The Children Are Our Future, Castiel shoots downs Sam's plan to talk to the kid about whats happening to him. Sam argues back that once Jesse knows the truth, he stop. Castiel argues back that Sam didn't, and leaves. This comments hurts Sam (due to his already guilt at what happened).

When Sam figures something is not right in a town, he calls Castiel in for help (99 Problems). When Castiel shows up, and tells Sam he finds Sam's voice degrading. Sam notices Castiel is drunk and asks what happened to Cas. Castiel answers he found a liquor store....(Sam: And?).....drank it. Sam attempts help Castiel from wobbling, and asks if hes okay. Castiel leans over and tells Sam not to ask stupid questions. Sam tells Castiel about the demon attacks around town and how the "prophet" Leah Giden. Castiel tells Sam that she is no prophet (because all the names of the prophets are seared into Cas's brain), and then Sam asks then what is Leah? Castiel later reveal that "Leah" is actually the Whore of Babylon. When Cas brings a weapon to kill her, he tells them that only a true servant of god can use it to kill her. Castiel continues on by saying he can't do it and neither can Sam since hes an abombination (because of the demon blood). Sam looks slightly hurt, but understands.

When Dean decides to say Yes to Michael in Point of No Return, Sam brings Castiel along to help him stop Dean. Castiel uses his powers to send Dean to Bobby's house. Like Sam, Castiel is angry at Dean for giving up, so they both work together to make sure Dean doesn't leave Bobby's. When Dean does escape, Castiel brings Dean back unconcious. Sam asks Castiel what happened and Castiel answers me. Later on, Sam decides to bring Dean along on a mission, despite Castiel not wanting to Dean to come along. Castiel can't understand Sam's blind faith in Dean.

As the final showdown comes along, Castiel comes once again to aid the Winchesters. In Two Minutes to Midnight, Castiel saves Sam from being strangled to death. Castiel is amazed how useful the gun is. Then in Swan Song, Castiel says an awkward goodbye to Sam, as Sam prepares to have an internal battle with Lucifer in his head.