Villains with revenge are common, but they work. We had villains that have been Star Trek Admirals.We the villain has been within the federation. I would not call a villain being a Klingon or someone outside of the federation. As they have been part of the leadership of the other society. A villain is not part of a society.
When we deal with a villain, the villain has always been a male. Is it time to have a female villain?
When we deal with a villain, the villain has always been a male. Is it time to have a female villain?