Re: Original Supervillain Groups -- Get Creative!
It is not exactly a 'group' but it makes a big appearance on my own campaign.
THE KNIGHTS OF THE TRUE TIMELINE
A terrorist group at least 1000 strong, it is doggedly pursuing the sole purpose of maintaining one 'true' timeline. (one true Ranma 1/2 timeline, one true DC Comics timeline, one true DBz timeline, and so on).
As such, they travel to all alternate universes out there (Hypertime, Fanfic universes, whatever) and kill key people/destroy key locations in order to make it closer to 'canon'-or destroy it completely.
It doesn't helps that they have flunked more that one mission and because of that, more alternate universes have appeared-giving them more targets to hunt.