Clearly, Barbatos could not enter the Prime Universe. That was why he had gone to such lengths to carry out the plan he called "Lowering the Curtain," transforming the Prime Universe Batman into a portal.
The stage chosen by Emperor Joker happened to be in the Prime Universe. Thus, although it was not intentional, the barrier between the positive-matter universe and the Dark Multiverse still prevented Barbatos from simply leaving with Chen Tao and charging into Earth-One to rescue William Hand.
Chen Tao had always felt that if Emperor Joker was certain he would arrive one step too late, then the "bomb" he had prepared to kill Robin had to be powerful enough. Otherwise, his game would be nothing but a joke.
Therefore, if Chen Tao wanted to protect Lord Barbatos and bring him to the front lines, he first had to solve the problem of entering Earth-One.
Barbatos's opinion on the matter was:
"Give me the Prime Universe Batman first."
Chen Tao said nothing.
You see, a new trust paradox had arisen.
How could he ensure that after obtaining the Prime Universe Batman, Barbatos would still honor his promise and help him rescue William Hand?
Barbatos realized the problem as well.
Thus, the two stared at each other and fell temporarily silent.
"Directly luring the Prime Universe Batman here might be difficult." Chen Tao considered his words. "But I might be able to find a way to bring over Zur-En-Arrh Batman."
That was a lie. Zur-En-Arrh Batman was one of the personalities of the Prime Universe Batman, Bruce Wayne. The two were originally one and the same. If Chen Tao could bring Zur-En-Arrh Batman here directly, then he could also bring over the Prime Universe Batman—and vice versa.
Batman Dragon did not trust him. Barbatos knew this, but he