Hao Xuan had obviously heard of the creature before. It was infamous even back on earth let alone the Greater World.
He watched on with bated breath as the three colossal heads continued to rise into the air. They were obstructed by the plumes of black smoke so their appearance could not be observed, not that Hao Xuan had the opportunity to do so.
Light snapped his fingers and the scene returned to its previous setting, that of a barren wasteland now that all the roses were destroyed.
Hao Xuan looked to Light for answers.
"What has that got to do with the Emperor?"
"Cerebrus has served as Hell's loyal watchdog for an eternity, hunting any who dare try to leave and devouring the flesh of those foolish enough to break in. He has also served many greater deities as I'm sure you have heard."