"The
Destroyer," derived from a Hebrew term that means
"construction." Chief of the seventh hierarchy's demons.
The ruler of the grasshoppers is referred to as Abaddon by St. John in the Apocalypse.
He is also known as the destroying angel or lord of the underworld, and is also known as Apollyon (Rev.9:11). (Also see Black Magic.)
Further Reading:
Barrett, Francis. The Magus. London, 1801. Reprint, New Hyde Park, N.Y.: University Books, 1967.
You may also want to read more about parapsychology and occult sciences here.