It's tough to say whether or not the prequel comic will be or should be treated as canon. Suffice to say everything that happened before this movie should not, of course, except the most basic parts of Superman lore: he comes from Krypton as a baby, Jor-El is his natural father, Jonathan and Martha Kent find him and raise him here on Earth, and so on. Even Kryptonite is tossed out from the "old canon" and not used the same way so, this again is what I describe by saying "This ain't your Daddy's Superman."
The prequel was written by Snyder and Goyer (and another writer) so I personally will consider it the canon for this new retelling of the tale until I have a reason not to, but that's just me - I'm not advocating other people do, they have to make that choice for themselves.
Nam-Ek is not listed as a character in the movie credits nor in the cast and crew credits/listing on IMDb, but Dev-Em as portrayed by Revard Dufresne:
http://www.imdb.com/name/nm3622559/
So I honestly still don't know who that Kryptonian fighting alongside Faora in Smallville is supposed to be, go figure. I'm going to assume (oh boy) that it's Nam-Ek since so many people seem to think the same thing although I don't have any 100% confirmation on who it's supposed to be - he's huge, a giant even and that's what Nam-Ek is described as, one of the largest if not the largest member of Zod's crew.
In the prequel, Kara does refer to Dev-Em and Nam-Ek, they're both supposed to be part of that first group - that's not to say all of those same people end up in the scout ship later on, however. Also: what happens with Nam-Ek that gets him from working alongside Kara 18,000+ years ago on Krypton that keeps him still alive (or Dev-Em for that matter) all those years?
It is a mystery.