Originally Posted by ElDuderino
Wasn't there an alleged spoiler a long time ago about there being a Kryptonian (thought then to be Zod) on earth long before Superman made himself known, and this Kryptonian was studying Clark along with the CIA?
Did I dream that up?
Yes, I think so. Fyi, the link below will take you to a wiki article and it may be spoiler in the context of MOS plot - if it's true at all!