The confidence of the Three Corpses God stemmed from his restraint over humans.
No matter if the opponent was a Transcendent or a Celestial, all humans couldn't escape their delusions.
Once affected, even Celestials would suffer severe consequences.
Even Guiguzi, who had beheaded the Three Corpses, fell prey to the schemes of the Demon in the end, allowing the Three Corpses God to rise to power. Let alone these successors who had already lost the inheritance of that era. They hardly had any means to prevent the Three Corpses.
Although the three enemies were not weak, one was a young girl with borrowed Celestial abilities.
One had become an Earth Level Extraordinary before the age of thirty and even gave birth to a Heavenly Pride that could restrain his existence.
And there was also a Military Clan Immortal whose strength was greatly limited for some reason.