[quote=@mattmanganon]
[@Sep] Well, the main point of the story is to have that "The big bad is coming and we gotta be ready for him" edge. I'm looking into big alien warlord types. Would Ronin the Executioner sit better with you?
[/quote]

If you can keep it to the point where he's not gonna destroy the world then I have no issue with it myself. 

Just remember everyone's in their forming years, back in the old Comics most heroes didn't face a world ending threat for ages. That's very much a modern movie thing where the hero is instantly against a galactic threat