Their relationship isn't exactly the best. It's more of the predator-prey type.
That's right. What you see in the Helllfire artwork are Murlocs being burned alive. Can you hear their cries of "MRGGRRLLGRLLL!!"?
What's more, it actually came from the cinematic trailer for World of Warcraft's Burning Crusade. You can also see Polymorph and Mana Wyrm in the video below:
