Demons

Demons are malevolent supernatural beings who follow Satan as their leader. Throughout history, demons have tortured mankind under the orders of Satan, and are the cause of many natural disasters and diseases. The false gods which other religions worship are actually demons who disguise themselves as deities. . While demons are currently free to roam the earth, God will eventually judge them and cast them into Hell at the end of time.

Demons in the Bible

 * Lucifer- Lucifer was once the most beautiful angel in Heaven before he was overcome with pride and fell to earth, becoming the adversary of God and humanity.
 * Abaddon- Abaddon is the ruler of the Army of Locusts from the Abyss, and will be released at the end of days.
 * Legion