Hmm... I'm trying to come up with a name involving the word mantle. As a layer in the hot depths of the earth, mantle brings to mind fiery and hellish imagery, while also being the name for a part of the body in squids (and other molluscs). In addition, mantle is another word for a cloak, which is somewhat reminiscent of the capes that vampires often wear. It seems like it would be a great fit for our vampire squid, but I'm having trouble making a sensical sounding name out of it. Maybe someone else will have better luck.