Lloigor

The name Lloigor was first used by August Derleth in his story "The Lair of the Star-Spawn". In that story, Lloigor was one of the two godlike entities (the other being Zhar) worshipped by the Tcho-tcho. Derleth sent the story to Lovecraft, who later referred to the Tcho-tcho in his own writings, but did not use Zhar or Lloigor.

Colin Wilson wrote a Mythos story called "The Return of the Lloigor", where lloigor were a type of creature, not a singular entity. These lloigor were "vortices of energy" that sometimes took the form of reptile-like monsters. They could drain life energy from human beings or cause painful mutations; they had once used this ability to punish human slaves when they had ruled an empire in Mu. They needed to work through human slaves because the Earth, being a younger planet than their original home, had a nature essentially hostile to the deeply pessimistic lloigor. Oddly, these lloigor were associated with Ghatanothoa (an entity from 'Out of the Aeons' by H. P. Lovecraft and Hazel Heald), not Derleth's god 'Lloigor'.