is cthulhu real ?

Wikipedia says...it is a fictional cosmic entity created by writer H. P. Lovecraft and first introduced in the short story "The Call of Cthulhu", published in the American pulp magazine Weird Tales in 1928. - I say that most things seem real when people believe in them... and this just seems like a far fetch possibility

In one of the countless alternate realities, yes. On this plane, Cthulhu is a kind of Freudian representation of a woman's genitalia as seen through the eyes of a man with a grudge.

see if you can find the Necronomicon and free him from his sleep

Depends how much brain damage you have

Very much so