Some advice on enemies Options

[Mantis]

I'm looking for a little advice on how to handle some enemies 2 characters have from character creation. They are a brother and sister pair on the run from a corporation (wanted quality) and also have a 5 point enemy each. The story being that they were framed for something by the enemy and this earned them the wanted quality from the corp. So the corp is hunting them while they look for the enemy to clear their names. The initial plan was that it is the same enemy for each but this feels a little weak to me. I thought that I could use the enemy in this case as 2 separate enemies, say a team that framed the brother/sister and make each enemy as a separate character, or combine the enemy into one more powerful character.
I'm using the enemy rules from RC with a 4 in connection and 1 in incidence. This makes a fairly well connected enemy that really doesn't care he is being hunted by the characters and still has enough juice to make their lives difficult on occasion. So what do the GMs out there think, 2 enemies that work as team against the brother/sister or 1 more powerful enemy? Or some other idea?