Host of Heaven

The Host of Heaven, a faculty created by God, describes the army of Celestial beings that live in Heaven. The Archangel Raphael refers to it as the "Holy hosts".

Rulers

 * God (formerly) - As their Creator, he was their Father and King, and governed the Celestial race singlehandely, but upon his retreat, Michael, his mightiest warrior, took command over the Angels.
 * Michael (formerly) - With him being in the Cage, he effectively has no say on the Host of Heaven anymore.
 * Raphael (formerly) - He wanted the Host of Heaven to bow down to him, and as Castiel declared Civil War, it is unknown if they ever took the pledge.
 * Castiel (temporarily) - Empowered by all the souls of Purgatory, Castiel, for a time, was able to rule Heaven with ease.
 * Naomi (probably,formerly) - Although it is stated by Metatron that Naomi is just a leader of one of multiple factions battling for control over Heaven.
 * Metatron (currently) Killed Naomi and cast a spell to expel all angels from heaven.

The Generals

 * Michael - God's oldest and mightiest Angel. He ruled in God's place for at least 6 millennia. But, since his imprisonment, he is no longer its leader.


 * Lucifer (rebelled) - Before disobeying God, Lucifer was an extremely powerful force in God's heavenly alliance. But since his fallout, he isn't part of the host anymore.


 * Raphael - (deceased) Before Lucifer's banishment, Raphael was an executive angel, whose initial designated ranking is unknown, although it is known that he watched over prophets. But once Lucifer fell, Raphael fell directly under Michael. Took over for Michael after he was sent to Lucifer's Cage and waged a civil war with Castiel for control of Heaven that ended with Castiel killing him and his followers.


 * Gabriel - (deceased) He was a high-executive in the establishment, however his actual ranking is unclear. He was God's greatest messenger before he left heaven and masqueraded as the trickster Loki on Earth.

The Seraphim

 * Zachariah (deceased) - He, being a seraph, was an angel of high esteem, and largely recognized for his accomplishments and achievements, being a six millennia old angel. After his constant failure to secure Dean, Michael kicked him out, but decided to give him one more chance. However, Dean killed him.


 * Castiel (promoted) - After being resurrected by God for a second time, he was promoted to the rank of Seraph and gained great power and influence over the angels of Heaven. He used this to start a civil war against Raphael that ended when Castiel declared himself the new God and smite Raphael and his followers. Castiel was ruler of Heaven for a time as the new God, but eventually gave up the power and died as a result of possesion by the Leviathans. Even though he was resurrected again, he has chosen not to return to Heaven and has essentialy renounced his role in Heaven, though he remains a Seraph and as such retains all of his powers. Castiel was the captain of his garrison that succeded Anna. He was for the most part a very obedient/committed angel. But ever since he banished his superior, Zachariah, he was unable to return to Heaven.

Angels

 * Naomi - Angel of an unknown ranking who exists in a part of Heaven that not many have been to. Despite this, she is clearly very powerful and high ranking, able to make Castiel answer her questions despite him being a Seraph and able to order an incursion into Purgatory to rescue him that cost many angels their lives.


 * Anna (deceased) - She was originally a garrison leader, over Castiel, Uriel, and Balthazar. But when she fell and removed her Grace, that position was revoked. She eventually did reclaim her Grace, and Michael eventually "fired" her for trying to kill Mary Winchester before Sam and Dean were born.
 * Uriel - (deceased) He was below Castiel. He was noted as a Specialist by Castiel, the meaning of which is unclear. However, he was a considerably powerful angel given his type. Killed by Anna to save Castiel after being revealed to be a Lucifer loyalist.
 * Hester (deceased) - Though she is only an average angel from Castiel's garrison, Hester assumed command of the Heavenly Host when Castiel and Raphael both died. Killed by Meg to save Castiel.
 * Virgil - Sometime after his creation, he was put in charge of all of Heaven's weapons. Despite this, he was a normal angel. He is now trapped in the alternate Earth.
 * Balthazar - (deceased) Balthazar was a good friend of Castiel, fighing alongside him in the Host. Balthazar was "a great and honorable soldier", according to Castiel. At the first chance Balthazar got, however, he quit the Host, involving himself in Earth's song; wine, thievery, etc. At one point after Michael and Lucifer were imprisoned, he moonlighted as a Crossroads Demon on Earth. Killed by Castiel for betraying him.
 * Rachel - (deceased) Her official ranking is unknown, however when Castiel rebelled, and formed his own battalion of angels, Rachel was his lieutenant. Killed by Castiel in self-defense when she learns of his plans and attacks him.
 * Inias (unknown) - Average ranking angel from Castiel's former garrison who seemed to act as Hester's second in command. More forgiving of Castiel for his actions and more friendly to humans. Took over Hester's role after she died, but it is unknown if he remains alive as most of the angels from Castiel's garrison were wiped out by the Leviathans.
 * Metatron - Average ranking angel who was selected to be the Scribe of God. Left Heaven when the Archangels took over and cut himself off completely but retains all of his powers.

Low, low-tier Angels

 * Joshua - He is significantly lower than most other angels, however he has an important occupation, in cleaning/monitoring God's Throne Room. which appears as a garden, and he is the only one who God speaks to directly.
 * Cupids - A special class of angels, they rank below other members of the Host. They are tasked in fating specific couples and bloodlines to meet and mix, depending on Heaven's interests. John Winchester and Mary Campbell was a high priority for the Cupids.

Season 4
The "grunts", such as Castiel, of Senior Management Upstairs, are deployed for the first time in 2,000 years, to stop Lilith from breaking the 66 Seals, and freeing Lucifer.

Season 6
It was mentioned by name in this season. Shortly after the Apocalypse was stopped, Raphael called an assembly of the Host, in which angels would either align with him, or die.

Season 7
After absorbing every soul in Purgatory, along with the Leviathans, God's oldest creation, Castiel, in Meet The New Boss, once he returns to Heaven, slaughters any remaining Angel who aligned with Raphael during the riot.

Later, two from his garrison, specifically Hester and Inias, come to Earth to secure the Prophet, Kevin Tran. Hester is killed, and Inias returns to Heaven. Castiel reveals that his garrison and all the angels who were posted on the Earth are dead as the Leviathans killed them all. It's unknown if any of the garrison survived or if Heaven has sent a new garrison to watch the Earth now that the leviathans are leaderless.

Season 8
Heaven was still in disarray and heavily factionalized, with several angels vying for control. A group of angels under the command of the mysterious angel Naomi rescue Castiel from Purgatory. The incursion cost many angels their lives, but it was succesful. Naomi later summoned Castiel to her and ordered him to report in to her on the Winchesters from time to time and to aid them in any way they need. Naomi's primary goal was to secure the Angel Tablet and to help the Winchesters close the gates of hell.

Castiel successfully located the Angel Tablet but was released from Naomi's control upon his contact with the tablet. He fled and took the tablet with him, prompting Naomi to locate Castiel.

Ion defected and was hired by Crowley, and acted as a double agent against Naomi.

Metatron, the Scribe of God who was forced to exile himself from Heaven to protect the Words of God, was later located by the Winchesters. He helped the Winchesters in their goal to seal the gates of hell. At the same time, he convinced Castiel that Heaven also needed to be shut so that angels could settle their disputes against each other and prevent their quarrels from bleeding into earth. He aided Castiel in completing the first two trials. However, before Castiel could finish, he was abducted by Naomi and her angels.

Naomi attempted to uncover Metatron's thoughts and discovered the scribe was actually working on a plan of vengeance against all the other angels. The trials he set Castiel to were actually part of a spell to banish all angels from Heaven. Naomi immediately conveyed this to Castiel, who was wary of Naomi, but was willing to listen. Castiel travelled to Heaven only to find Naomi dead. He was then incapacitated by Metatron, who removed the seraph's grace and turned him into a human, thus completing the spell. Not long after, the entire Host of Heaven save for Metatron was seen falling down into earth, losing their wings in the process.