Satan

The First of the Fallen, also known as the Devil, or Satan, is the ruler of Hell and the embodiment of sin and evil.

Banishment from Heaven
As his name suggests, the First of the Fallen was the first angel banished from Heaven and cast down to Hell.

The Devil's Vinyl
A Blue's musician, by the name of Willie Cole, sold his soul to the First of the Fallen for fame. After a period of time, the First came to claim Willie's soul, while the latter was recording in a studio. The First's voice ended up being recorded on the song Willie was recording at the time. Anyone who picks up the record will become tempted to play it, and if they listen to it, their eyes will start to glow yellow, and the person will falls under a hypnosis and commit suicide.

Powers

 * Nigh-Omnipotence: As the ruler of Hell, the First of the Fallen possesses nigh-omnipotent levels of supernatural power.
 * Necromancy: The First of the Fallen possesses the power to bargain with humans for their souls, in exchange for a wish.
 * Dimensional travel: The First of the Fallen is able to travel from Hell to Earth, in order to claim the souls of those who sold theirs to him.
 * Mind control: When the voice of the First of the Fallen was recorded on a record, people who listened to it were induced to commit suicide.