Ok, truth time, metallers are big ol'nerds. Comb the Led Zeppelin lyrics carefully and you'll hear Lord of the Rings references, and this was before the Peter Jackson movies. Ace Frehley and Gene Simmons were huge on Science Fiction and Horror respectively.
So, these guys took their name from the Cthulu Mythos. Even the mighty Metallica has used that name, though they misspelled it.
These nice French boys have started a death metal band with some very obvious nerdy references and lyrical content. Encyclopaedia Metallum lists their lyrical content as influenced Frank Hebert's Dune. Ok, this is about as nerdy as it gets, unless you think about this song here.