[@Omega Man] Those are interesting additions, I can think of a couple ways they can be tied to Noir if we're feeling so inclined:

Heartbreaker - I can see her trying her control thing on Nick, and it even briefly working, but only briefly due to Nick possessing Abigail, who can possibly keep him protected from this sort of enemy mental fuckery and of course, Abigail's a [i]she[/i] and thus there's no way Heartbreaker could ever control her in any capacity.

Valentine - I can definitely see these guys as occasional foes for Nick to go up against. Not every case has to be in the realm of the weird and magical after all.

Mountaineer Newspaper - The idea of the Editor's son being lost in the past because superheroes failed to save him could be tied to the ONE THAT GOT AWAY storyline that focuses on Mercer having to deal with a past case coming back to haunt him.