King Elbas had fought with the pack of dragons led by the four upper tier specimens that had inherited the core aspects of the world, and Sepunia had been part of Heaven and Earth's system for a long time. They didn't need to ask why the rulers had chosen those species for the experiment, but they remained amazed about the whole procedure.
Noah didn't manage to understand every detail about the black liquid. He actually knew very little about it, but his hypotheses had compensated for his ignorance.
The restrained specimen was the result of a forced fusion with the metal that the world had naturally generated to counter the sky. The dragons also had a deep connection with that role due to the four upper tier leaders in charge of the army of magical beasts. In theory, the union between the two had to create an even stronger enemy of the rulers, but the latter made sure to turn things in their favor.