Cherubim are one of the highest ranking of angels in the Christian angel hierarchy, second only to the Seraphim. Their rank among angels is uncertain but they are always categorized in the First Sphere. Some believe them to be an order or class of angels; others hold them to be a class of heavenly beings higher than angels.
The biblical prophet Ezekiel describes the cherubim as a tetrad of living creatures, each having four faces: of a lion, an ox, an eagle, and a man. They are said to have the stature and hands of a man, the feet of a calf, and four eye covered wings. Two of the wings extended upward, meeting above and sustaining the throne of God; while the other two stretched downward and covered the creatures themselves.
It is even believed that Satan, before his fall from Heaven, was a high ranking Cheribum and a prince of the Heavenly sphere. This is hinted at the fact that the Devil possesses three faces in his demonic form which also shows his appearance and status as a Cheribum has become twisted and corrupted after the fall. However, this form is possibly also a transformation he assumed in battle during the War in Heaven.