It seems suspiciously close to what Avengers Assemble 2 will be doing the same year with Thanos, as according to Latino Review the bad guy in the 2015 Justice League movie will be equally powerful, universe-bothering semi-deity Darkseid – whose sole live action appearance to date was in the tenth and final season of Smallville.
The characters are so similar that they actually teamed up in DC Versus Marvel…