The One that Pulled Himself Out of Perdition

Two brothers (Sam and Dean) follow their father's footsteps as “hunters,” outlaw cowboys that kill monsters such as vampires, werewolves and demons. Their father, John Winchester raised Sam and Dean to be hunters after his wife Mary was murdered by the demon Azazel when the boys were little. 22 years later, the brothers set out on a journey to fight evil along the way, to find their recently-missing father; when they finally do he reveals he knows what demon killed their mother and has found a way to track and kill it. Meanwhile, Sam develops frightening abilities such as seeing visions of people dying before it actually happens. These visions are somehow connected to the demon that murdered his mother and its mysterious plans that seem to be all about Sam. When their father dies striking a deal with that very same demon, the brothers determine to finish his crusade. But disturbing revelations about Sam's part in the demon's apocalyptic plan are presented when John's dying last words to Dean are revealed. Dean is supposed to kill Sam before Hell’s plan is fulfilled. Sam is to become a vessel for Lucifer after he is broken out of his cage in Hell. This will start the Apocalypse.

To ensure the master plan of the Apocalypse happens, Heaven also plays a role. They bet all they have on the power of their champion, the Archangel Michael. After they win, Paradise will return to Earth. For such end, they are willing to sacrifice billions of lives in the war of Armageddon. Castiel is deployed form the supernal realms to ensure that Sam becomes Lucifer’s vessel, and Dean becomes Michael’s. He is tasked with bringing the will of Heaven to fruition without question. However, by observing both the good and bad in humanity, Cass changes and becomes the most valuable allied of the brothers in their mission to stop the Apocalypse and defy heaven.  

Castiel waged a second civil war in Heaven to prevent the Archangel Raphael from restarting the Apocalypse. To win this war of attrition, Castiel teamed up Crowley, King of Hell, to take abundant souls from Purgatory. Castiel absorbed billions of souls, including the primordial beasts, Leviathans, from Purgatory. The power was so great that Castiel effortlessly killed the Archangel Raphael. However, the evil souls had warped Castiel's mind, causing him to proclaim himself as the new God and proceeded to wipe out all of Raphael's followers, while killing innocent disbelievers on Earth. After the war, Cass rejoined the Winchesters and became a hunter himself. 

Castiel is honorable, resolute, innocent and above all loyal. He literally died several times for love of his friends and will stop at nothing to fulfill justice. This Blogg dives into his personality and motivation.