Castiel

Castiel is an angel of God that was ordered to pull Dean out of Hell and help him with his mission to stop the demon Lilith from breaking the seals that would release Lucifer. He seems to be very mysterious and introspective about his assignment from God. In a recent episode he revealed to Dean that his directives are to take orders from Dean. Sam is initially in awe of Castiel for which he is instantly snubbed as being exposed by Castiel by having demon's blood and for using his abilities which are strictly forbidden (due to there demonic origins). Castiel appears to be impervious and resistant to all know forms of spells and hexes as he effortlessly passed by all the seals that Sam and Dean scribbed inside the warehouse where they all formally meet (seen in the attached picture).

Dean bares handprints or the "Mark of Castiel" on his upper torso as a verification and reminder that he physically pulled Dean out of Hell and has threatended to put him back if he doesn't aggressively proceed in his mission to prevent the release of Lucifer. The validity of this threat is unsubstantiated as he revealed that his mission is to follow Dean's orders. More than likely a psychological tactic to motivate Dean. Although he is an Angel, Castiel has admitted certain limitations to his abilities while on Earth. His signature power appears to be instant teleportation as he is able move effortlessly from one point to the other in the blink of an eye.

Castiel's physical appearance seems to be that of an average human male who is returning from a hard day's work in a office environment. He sports a pair of dress shoes, dress slacks, white stripped dress shirt unbuttoned and loosened necktie accentuated by a beige trenchcoat. Although he has a very dire demeanor his outward appearance radiates a natural calm and serenity which makes conversation easy and direct.

Castiel and one of his Angel brethern make mention of a conversation (which is reminiscient of dialogue in the movie The Prophecy starring Christopher Walken and Eric Stolz)in relating God's relationship to Mankind and the majority of the Angelic population being very jealous of our ability of free will as they were considering destroying a town in the episode *"It's the Great Pumpkin, Sam Winchester"

Appearances

 * "Lazarus Rising"
 * "Are You There God? It's Me, Dean Winchester"
 * "In The Beginning"
 * "It's the Great Pumpkin, Sam Winchester"
 * "I Know What You Did Last Summer"