[quote=@Weird Tales]
[@Archmage MC] dc has never used power dempering except through the use of magic which is still extremely rare. I think you really don't know much about dc
[/quote]

No I'm 100% sure there was some DCAU episode where the heroes had to infiltrate the villain prison to get some info from one of the villains. I know that because Killer Frost was one of the baddies of that episode. They wore collars that removed their powers.

I'm pretty sure it was a filler episode though.

OK I found it. It was a Young Justice episode actually. Episode "Terrors"