via Lovecraftian Science:
… Read the rest
H.P. Lovecraft has cited a number of times that Cthulhu and its associated spawn are not residents of our space-time as are Elder Ones, shoggoths, the Great Race and humans. For example, in “The Call of Cthulhu” one of the captured cultists states that the Great Old Ones [referring to Cthulhu and its spawn] are not flesh and blood and that while they have shape, there were not made of matter.
In “At the Mountains of Madness” it is stated that , “…both the Cthulhu spawn and the Mi-Go seem to have been composed of matter more widely different from that which we know than was the substance of the Old Ones [here the term Old Ones is being used to refer to the Elder Things or Elder Ones]. They were able to undergo transformations and reintegrations impossible for their adversaries, and seem therefore to have originally come from even remoter gulfs of the cosmic space.”
Based on these citations as well as other references made by HPL, Cthulhu and its spawn are not from our space-time continuum.