Cthulhu is a fictional cosmic entity created by horror author H. P. Lovecraft in 1926, first appearing in the short story "The Call of Cthulhu" when it was published in Weird Tales in 1928. He is a Great Old One of great power who lies in a death-like slumber beneath the Pacific Ocean in his sunken city of R'lyeh. He remains a dominant presence in the eldritch dealings on Lovecraft's world.
Cthulhu is one of the central Great Old Ones and their high priest of the Lovecraft Mythos. It is often cited for the extreme descriptions given of its hideous appearance, its gargantuan size, and the abject terror that it evokes. Cthulhu is often referred to in science fiction and fantasy circles as a tongue-in-cheek shorthand for extreme horror or evil.
Cthulhu resides in the Tower of Will that exists in the Kadath Mandala. Zula tells the story of Cthulhu as the master of oceans and the Mu continent and how even now he is sealed in the sunken city of the Pacific Ocean, R'lyeh, but will not die. From the bottom of the deep sea, he gives people bad dreams, devouring his followers' souls, waiting for the day he will once again take control of the world above the ground and how that day will inevitably come. When the stars show the right way once more, the old rulers will resurrect countless relatives, regaining control over the universe.
The group's anger at Zula's words allow them to reject Cthulhu and what he stands for, allowing them to defeat him in battle and gain the Trapezohedron of Will.
+15% to Almighty damage and HP stops at 1 HP upon receiving the first killing blow.
Call of R'lyeh
Adds Null Mortal. Increases damage dealt to enemies inflicted with Gloom by 30%.
If user's party attacks first at beginning of battle: Inflicts 10% fractional damage (200 max) on all enemies based on their current HP and reduces MP by 1.
If enemy attacks first at beginning of battle: Reduces 2 enemy Press Turn Icons. (Only up to 2 Press Turn Icons can be reduced by skills or effects.)
At start of enemy turn: Inflict Gloom on all enemies. (1 turn)
Inflicts Almighty (Magic) damage (Power: 120) on all enemies with 50% chance to inflict Bind and Charm on hit enemies, and reduces MP by 2.
Inflicts Almighty (Magic) damage (Power: 200) on a single enemy.
+15% to Almighty damage. +15% chance to inflict status ailments.
Activates the following Chain Effects at the beginning of battle:
If user's party attacks first: Increases own party's EV/AC by 20%. (3 turns)
If enemy attacks first: Reduces EV/AC of all enemies by 20%. (3 turns)
Epitome of Madness
+15% chance to inflict status ailments, +15% to EV.
Epitome of Fortitude
+20% to max HP, -50% to Critical hit rate of damage received.
+20% damage to skills that target all or random enemies.
Adds Light Null.
Adds Null Charm and Null Poison.
Cthulhu speaking R'lyehian.
This version of Cthulhu is a giant demonic octopus; literary accounts of Cthulhu's appearance suggest it is humanoid.
For unknown reasons, the design for Cthulhu in Shin Megami Tensei II incorporates a human penis as a tongue. This penis tongue does not appear on his sprites in II, if..., or Persona 2: Eternal Punishment, nor his model in Shin Megami Tensei: Liberation Dx2.