Note: In many mythological structures chaos is said to be the first existence of the world from which everything else is born. The primal chaos is often likened to the void of space before creation began (link).
Former Spiritual God
He is a still unnamed member of the human spiritual gods. In the past he founded the strongest of the human tribes, the Primal Family. Even though Yu Yan witnessed his Divine Spark being destroyed, because he is the most mysterious among them, she could not say for sure if he couldn't find a way to survive.