Qlaqalqohoth

Qlaqalqohoth, The Gnashing One, a mythical Yagathian demon and god of slander, fear, and he often brings strife to the Universe by insulting and tempting mortals for pleasure.

Mythology
"'Spewing out his divisive and fierce venom Qlaqalqohoth leads any living being into a demented slave...The delight of afflicting anguish upon the worlds is known throughout the Universe...Qlaqalqohoth was dethroned and thrown into the Dark Abyss where he joins his immoral cohorts...'"

Qlaqalqohoth is considered an uncontrolled and brutal force that destroys everything in his path and he was the rival of other gods of the Yagathians.

He was eventually freed from his prison by Dachuggoth only to bring fear into the Universe once again destroying many worlds by fighting other Fallen Gods.

The Demon Lord uses Qlaqalqohoth as a messenger and guard for preparing the legions into battle to suppress the rebellions carried out by the Fallen Gods who tried to escape from the Dark Abyss.