Christian Campbell Demon

This unnamed demon worked for Crowley and possessed the hunter Christian Campbell.

History
This demon's background is almost completely unknown. All that is known is that this demon worked for Crowley and for an unknown period of time he starting possessing Christian Campbell.

Season 6
When Samuel Campbell starting working for Crowley this demon was ordered by Crowley to possess Christian Campbell to act as his mole. It is unknown how long this demon was possessing Christian Campbell. This demon first revealed its presence when the Alpha Vampire escapes and snaps Christian Campbell's neck. While the Alpha Vampire is distracted with Sam, this demon comes up behind it and injects it with dead man's blood. Christian's eyes are black, and several more demons show up and take the Alpha away with them, leaving just Dean, Sam, Samuel, Gwen, and Crowley. Crowley reveals that Christian has been possessed for a while and serving as his mole, and that Samuel has been working for him, gathering high-ranking creatures and trying to learn the location of Purgatory because Crowley is interested in "developing" it. How long Christian had been possessed for is uncertain as, earlier in the day, Castiel was in the same room as him and didn't mention anything. The demon now works at Crowley's side in a disused prison where they torture and interrogate all the creatures the Winchesters bring them for information on Purgatory. He encounters Meg, a demon still loyal to Lucifer, trespassing in a corridor and incapacitates her. This demon begins torturing her with Ruby's Knife, demanding to know "everything". She is unimpressed by his methods, stating that her vessel has seen worse treatment, to which the demon answers by escalating the torment. He gets nothing out of her, however; as Dean sneaks up behind him and takes the knife, stabbing the demon through the back, instantly killing him as Meg taunts him about Dean's presence.

Appearances

 * Season 6
 * Exile on Main Street (Possibly, unseen)
 * Two And A Half Men (Possibly, unseen)
 * Family Matters
 * Caged Heat