Seeing that they can finally get to the point, Mogranius chose to answer truthfully but didn't reveal his whole intend since it will no doubt be portrayed as more than threatening, the topic is more than sensitive. "We are here to talk with your King, about a possible cooperation."
Of course, he can't say something like "I might possibly attack your King if he is using Demonite." In this little explanation. The best option here is to use the color of his skin and what faction he stands with, to his utmost advantage. "It might not be as well spoken off compared to your amazing revolution that got the entire Continent on their feet but... We are here to speak in the favour of 3 Revolting Domains."