Cthulhu, for his part, was enraptured with things the others probably couldn't see. That the humans in the group wouldn't want to see. He was slowly bringing aspects of his true form into synchronized harmony with a plane just outside the physical. He couldn't actually manifest anything other than his human form here, and he couldn't pull the whole of his true form onto the plane nearest the physical, but aspects of it could be brought into harmony with it. Anyone that could look in on that particular plane would see, in Cthulhu's place, a 12 foot tall slimy green humanoid, with a human face, five fingered claws and three toed talons. What first appeared to be swept back hair was in fact a set of four tremendously long, prehensile tentacles, with an identical set emerging from his back.
This had nothing to do with tearing information out of people. He could and would do that right away. This was just for his personal amusement. Once they were finished with the humans, he would push their consciousnesses onto the next plane. What he would do after that...was better left unsaid.
He clapped suddenly. "This is a wise plan! I am ready."