Ok, you'll see, I know I deciced to work alone in this wiki but I have received this message and I can't avoid to warn you about something.
Time ago this wiki had a category similar to the one you wrote in this thread but in singular; http://villains.wikia.com/wiki/Category:Imperialist And, as you can see in the elink, it was deleted because it was too close to "Evil Ruler" (currently merged into "Tyrants") and "Warmonger" (Currently merged into "Mongers").
The case is that we already have "Oppressors".
I'm not agree respect with hegemony and power hungry because the first is for characters who want to take over their respective worlds; either a foreing kingdom, their own Earth, a galaxy, the universe of the cosmos.
While power hungry is for characters who seek power but not always for hegemonist goals.
That is I proposed, but then I seen it was being deleted. To see if we decide once.
Well, then... what are we doing with "Hungry Villains"? Are we deleting it or not?
I made some rectifications too. For example; With "Strategic Villains" the term "Strategic" as sustantive would be better than "Tactical".
Seriously, how many categories with the word "villains" remain in this wiki? Anyway:
Okay, so let it be just "Food".
Sorry, I forgot this last:
Ok, Because you're removing "villains" from categories to reduce redundancies, there are some ideas;