... to be fair, Mola Ram manages to be a really fun villain despite being two dimensional. In part because of how fun a villain actor Amrish Puri was, in part because for someone with an army of goons, you get to see him *think* his way out of problems (flooding the mines, walking his hostages onto the rope bridge, how he fights on the fallen rope bridge are all fairly smart).

Also, we run into him in partway into collecting the stones; between enslaving children because literally they're smaller and therefore better miners (capitalism!) and condemning an entire small village to slow starvation, you already know he got the first two stones doing *something* completely heartless. The slow build of accumulating stones is different from most villains' need to get hold of the single McGuffin and NOW, and suggests he might have other things he's doing to advance his agenda.