LexCorp
The most famous of all Superman villains, Lex Luthor, does not make any appearance in Man Of Steel, but that doesn’t mean he’s not out there somewhere scheming.
A couple weeks ago Snyder discussed how he thinks Henry Cavill’s Superman needs to have his story further developed before Warner should think about making the Justice League film. When talking about that, he mentioned the infamous Luther being out there somewhere, showing that Lex is indeed on his mind.
In Man Of Steel “LexCorp” can be seen atop one of the skyscrapers and emblazoned on the side of a few tanker trucks. This was one of the more prominent Easter Eggs Snyder dropped in, so I wouldn’t be surprised at all if Lex’s starring role as a villain is coming our way very soon.