Dr. David Wheeler, Batman and others in “Unfinished Business”

...easiest thing in the world, being a teenager: you get up, you go to school, you come home, and you do your homework. How do you mess that up? Yet all of you did, in one way or another ― and now I have to clean up that mess!

He's been going on like this for hours, telling them how worthless they are, and how only he can help them. Won't even let 'em go to the bathroom!

Bruce Wayne

Sleep deprivation, endless harangues; it's classic brainwashing. Some cults do it. It's also occasionally used on prisoners of war.

And Wheeler's doing it to kids.