I love The Clock King.
I seem to remember a robot or AI trying to systematically replace all humans.
Was it the episode with that really big computer thing?
Yeah that's it. Had some sort of acronym. Can't remember though.
Is there such a thing as a "conventional" Batman villain?
Joker, Penguin, Mr. Freeze, Riddler...
You mean classic villains. Not just created for the show? If so, Clock King was a character from the comic books as well.
They don't have to be original for this show. "Non conventional" as in an opinions that is not ordinary. Most people would say the bigger names as the best villains.