Kai the Scion
Kai is the only son of the Emperor of Light and his heir. He is a bright and curious young boy with a mostly shaved head apart from a long ponytail at the back. He is usually dressed in fine silken clothes, and accompanied by his Goliath bodyguard Kang. He is the only known witness (apart from the players) to the death of Fulcrim.
The players met Kai later on in the Emperors chambers, but did not speak to him again.