This is when I realise how dangerous he is, not because he is evil, but because he is other. We tend to assume people are in most ways like us, and in most cases there is an element of truth in that, but Megalos is on another order of different. He literally does not understand why blood should trouble him. The skull in the blood pool was a cow’s, but he would have no difficulty putting a man’s body to that use, or a woman’s, if he thought it would be more effective in securing his goals. I imagine that he has, already, and found the results no more lucid than with cattle, and since cattle have more blood and are easy to come by he hasn’t bothered with people again.