Ragnarok didn't feel pain about the death of the dragon clone because Legion-8 had done his part in furthering their goal of perfection. It is something that he too was willing to do when he angered CARNAGE by devouring the plane. He was ready to die then, and Legion-8 was also ready to die.
In fact, there was no way out of it. Legion-8 had to die. Soverick was certain of it right from the moment he felt the gaze of the dragon king on them.
Soverick could sense the gazes of world gods as a transcendent, so it is easy to sense the gaze of someone more powerful than world gods now that he is an Origin god. They half expected the dragon king to attack them then, but he didn't. They did some thinking and came to the conclusion that the dragon king must want something from them since he didn't kill them immediately.
