Correct me if I'm wrong, but i think niki's husband is that black guy (Sylar). They both had the symbol as a display...niki's tattoo..and his necklace. And they just so happen not to take her...
I believe she'll end out being a villian in the movie and something tells me her son might be that big rock/fire monster they keep picturing ( I may be wrong). He was reading the magazine earlier in episode 1 or 2 with the monster on the cover and from the looks of it the monster is evil.
It reminds me of when Hiro read his comic and he knew what was going to happen. Thats why the kid is not so surprised about the jobs his mother has.