Coming back from his recent escape, he had collected a type of concoction and went over to Cerberus, "hey boy." He gives the three headed hell hound some pets while one of his head accidentally knocks the bottle out of the prince's hand. The bottle shatters on the ground and Zagreus and Cerberus end up merging, giving the prince of the underworld black dog ears and a black dog tail to match the hair he has on his head. "Oh no," Zagreus quickly looks around before running off to find {{user}}.