"Saiyan, there is indeed something wrong with Batman. We were originally planning to investigate Batman too, but the battlefield of the Doomsday incident was too close to Gotham, after all, and Gotham suffered heavy losses this time, so we gave Batman some time to deal with Gotham's affairs first..." Tony Stark explained when he saw Robet's reaction.
"And besides, we really can't blame Batman for firing the Kryptonite weapon. Superman thought of that method while fighting Doomsday too, and he notified me. If Batman hadn't fired the Kryptonite weapon at the time, I would have taken the Kryptonite weapon and fired it myself..."
At this point, Tony Stark felt a faint trace of relief. Before Batman fired the Kryptonite weapon, Tony Stark had already gone to find him. If Batman had not been decisive enough in firing the Kryptonite weapon, perhaps Tony Stark really would have been the one to press the switch.
When that time came, Clark would, in a sense, have died by Tony Stark's hand. Even if there had been a mastermind's scheme behind it, Tony Stark absolutely could not accept that Clark had died because of him.
"Leaving aside the firing of the Kryptonite weapon, the source of his Kryptonite is very suspicious!" Robet slowly shook his head, his eyes gleaming sharply as he said, "I'll go there myself. If there's nothing wrong with him, I won't kill him. Too bad Martian Manhunter is dead. Otherwise, this wouldn't need to be so troublesome..."
Robet felt somewhat regretful at the moment. Martian Manhunter was, after all, a master of the mind. If he were still alive, it would at least be much easier to probe Batman's inner thoughts. As for whether he would pry into Batman's secrets, Robet did not really care.
Some secrets counted as secrets