Re: Bane or the Joker?
^ I personally feel it is all of the above.
It's also noteworthy that they're the ones who ushered in the existence of the reactor. The Tate persona and the fact that she was able to buy enough stock of W.E. to end up on the board shows that they were certainly well-funded. I would have to imagine that the reactor was conceived with the foreknowledge of what would result in a gradual decay in mind.