[quote=@Roman]
So what about if you’re using villains for your character that are traditionally levied against a different hero? Would you need a sheet for them, and/or approval from the parent PC (if there is one)? 

How ‘big’ does a heroic character need to be before they pass that ‘NPC Sheet’ threshold? 
[/quote]

Parent PC if there is one as is traditional in these games. If the villain is central to the plot of another character I'd ask for you to PM me first.

In terms of the other question I feel like I may have made things too confusing and as such I'll lock in Flash and Aquaman as NPCs and just ask that if you're ever unsure about using someone who isn't a legacy just to ask me, or us, here or in a PM.