We’re not really supposed to be able to pronounce it. A lot of Lovecraft’s work involves extradimensional beings beyond our comprehension; what we perceive is basically a mere fraction of their true forms. The same goes for their names; we can come up with close approximations (as the others have suggested), but we can’t actually pronounce them properly. I usually go with something like “k thoo loo”
BCN is one of my favorite comics out there right now, and it’s not just because it’s about kitties. It’s genuinely well written, well drawn, funny, and charming. And the books make great Christmas gifts for my dad’s cat-loving girlfriend.
I used to work around five different Larrys. Fortunately, they had different positions and shifts (for the most part, anyway).