Belial is also called Balhor or Beliel. His name according to some authors means "corrupt gains." In the Middle Ages he was considered one of the princes of Hell and therefore one of the potential heirs to great throne of hell.
It was once an angel, possibly a cherub, who followed Lucifer in his rebellion and finally fell with him and the rest of his followers, transmutating themselves into a demon.
Belial represents the earth element and carnal impulses, its strongest month is January and name the time has elapsed to the extent that the word war adjective that refers to war is believed to be directly derived from the name Belial.