group
I agree.
I haven't got a chance to get my next character(s) up yet, but if I do two, one is going to be a superhuman and one is not. One of them is lowkey a criminal, and he does a lot of dealing on the Black Market, especially with weapons, technology, and highly specific and powerful drugs (which means he has connections with a lot of criminals, opening more doors for future antagonists and possibly even allies). He's more of a grey character than anything at the moment, aligning himself with no one. However it might be cool to have him as perhaps a weapons supplier for Vestige or even a member of his gang. He also deals in secrets and has a lottt of information on various groups around the city. Whenever you're looking for something and someone says, "I know a guy," this is that guy.
As for the other, I'm still bouncing around ideas for what he will be, but I agree that we should find ways to tie everyone together.