Castiel

Castiel is a character from the Supernatural fandom.

Castiel, an angel of the Lord, was responsible for pulling Dean Winchester out of Hell, on God's command. It was his job to help prevent Lilith from breaking the 66 Seals that, once broken, would release Lucifer from his cage. Once Castiel learned that the Angels wished to free Lucifer, he defied his angelic brethren and died trying to help Dean prevent Sam Winchester from breaking the last seal.

Destiel
Destiel is the ship between Castiel and Dean Winchester.