Ruler of Heaven

The Ruler of Heaven is the leader of Heaven's angels.

History
Since the creation of Heaven and its angels, God ruled Heaven from his throne room. After Lucifer bypassed Gadreel's defenses and corrupted mankind, God ordered Lucifer's imprisonment and then left.

Michael, being the most powerful archangel, became viceroy over all of Heaven, but did not reveal God's absence to the majority of his brethren. He ordered the angels to stay away from humans for 2,000 years, after which he and the senior angels worked to get the Apocalypse going.

Michael's defeat and fall into the Cage caused Heaven to lose stability. Raphael, the only archangel available at the time, sought to become the new leader with his first goal being the restarting of the Apocalypse.

Castiel defied Raphael and a civil war broke out. Through the power of 30-40 million monster souls and the Leviathans, Castiel was able to obliterate Raphael and any who opposed him. His death at the hands of the Leviathans left Heaven without a proper ruler.

As a result, many factions were formed, each seeking to take control over Heaven according to their own will. Among them was Naomi. Metatron was able to kill Naomi and banish all the angels from Heaven, declaring himself the new ruler.

The combined efforts of Castiel and Gadreel resulted in Metatron's defeat and imprisonment. Heaven voted Hannah as the next ruler, though it is unknown how much power she possessed. It is unknown who now rules Heaven upon Hannah's death.

Known Rulers of Heaven

 * God (since creating it until Lucifer tricked Gadreel and then he left)
 * Michael (1-5)
 * Raphael (6)
 * Castiel (7)
 * Metatron (9)
 * Hannah (10-11)

Trivia

 * Gabriel is the only archangel not to be the ruler of Heaven or Hell.
 * Many people think Hester led Heaven after Castiel, but this was never proven.
 * Naomi was one of the many faction leaders in Heaven and one of the most prominent.
 * While Hannah took over Heaven after Castiel and Metatron it was never really cleared how much authority she had, especially after one of her angels killed her.