I was reading a book full of H.P Lovecraft stories, and I came across the classic horror story "The Call of the Cthulu." As I was reading, I saw that the Cthulu head and Slig heads are quite similar. Read this: (sadly, this isn't the excerpt i wanted, but it describes the head a little)
It seemed to be a sort of monster, or symbol representing a monster, of a form which only a diseased fancy could conceive. If I say that my somewhat extravagant imagination yielded simultaneous pictures of an octopus, a dragon, and a human caricature, I shall not be unfaithful to the spirit of the thing. A pulpy, tentacled head surmounted a grotesque and scaly body with rudimentary wings; but it was the general outline of the whole which made it most shockingly frightful.
Didn't do much good? Well, look at this sketch that H.P Lovecraft did of the beast:
http://www.stg.brown.edu/projects/lovecraft/Cthulhu.GIF
So, what do you think? Did Lorne or Sherry get some inspiration from "The Call of the Cthulu" or was it just a coincidence?