It all depends on the writer. I can see, at the very least, someone sneaking in someone obscure in a crowd scene. I'm sure we'll see a lot of the main core cast at first. Who knows what we'll see if this becomes a hit?Too bad there's no sign of whether any obscure classic-era characters will be included. Hopefully they'll be included even if they're not on the cover (at first I was worried that Boom would ignore anybody who wasn't on the first cover, and obviously we got many obscure characters in the Boom comics).