Look, first things first, speculation about who the bad guy will be in Star Trek 2 is very silly. It's Khan. Period. Because Star Trek 2 was made a quarter century ago with a certain Ricardo Montalban. Whatever J.J. Abrams does next is not Star Trek 2. I don't care how pedantic this might seem. If grammar nazis are going to drop atom bombs over comma splices and typos, then I feel it's only right to take a stand on movie numbering.
Ahem. So anyway, the trade news rumors here are about the possible bad guy in the twelfth Star Trek film. A confidential informant of Bad Ass Digest says that it will definitely not be Khan and goes on to say: "It's definitely a character that will make fans of TOS excited. Think along the lines of Harry Mudd or Trelane or Gary Mitchell or the Talosians or the Horta. Actually it's one of those that I named."
It's important to note that Bad Ass Digest is affiliated with the Alamo Drafthouse. All I know about the Alamo Drafthouse is that it is a theater in which you can drink beer. I am therefore predisposed to believe anything this source says, up to and including the sky being purple and the moon being made of frozen yogurt.
Here's the ten second run down on who these characters are:
Harry Mudd: con man, played for laughs.
Trelane: godlike being, turns out to be a child of his species
Gary Mitchell: friend of Kirk, gains godlike powers, goes nuts
Talosians: godlike beings who create perfect illusions
Horta: sentient rocks
Hmmm, there's sort of a pattern there, some sort of word that keeps popping up...
Well, it could just be another false rumor on the pile, but if it ends up being accurate, it could be fantastic news. The flaw of the Star Trek films, even the best of them, has been how rarely they've touched on the best parts of the television shows, that mixture of wonder and meditation. Space battles and steely resolve were but the window dressing.
(source: Bad Ass Digest)