Confusion appeared in the eyes of the Sacred Kings, Knights, and everybody else present since they did not understand what Zatiel meant by "The Antagonist."
Of course, for the Daybreak Universe, the Beyonder was an existential threat that needed to be handled, but no matter how they were, everybody saw themselves as the hero of their own story. It made no sense for someone's identity to be the antagonist.
The Samsara Thearch noticed the doubt and bafflement in the Sacred Kings, but he did not explain and kept his eyes on the Beyonder, who was smiling at him.
"Bingo! You are right. I am the Antagonist of this Verse. My purpose in life is to fight you, push you to the absolute limit, and be defeated by you in an epic battle."