There was a reason why Peter had a dream about Nathan talking to him and then him turning into Sylar?

And in 5 Years Gone, We see that Sylar masked himself as Nathan so he could be president!

He forsaw the future once again in his infamous dreams!

you may be on to something
wonder if its another power

It is;

Ma Petrille has this power. Thats were he got it from.

what I dont get about the petrellis is that 2 normal (maybe) had 2 hero children. what if peters dad had an ability

This was what gave it away from the beginning of 5 years gone that Nathan was really Sylar in disguise.

I'm pretty sure that Angela has a power, probably what riddance said, in (spiolers) and no, "Dallas"(Pa Petrelli) had no power, read the graphic novels called War Buddies.

you don't know that. He could

I don't Angela has a power but papa petrelli might has a power(I think it's about dreams) .Just a thought.

people are thinking that papa petrelli is Uluru, the rock monster guy that keeps popping up in episodes. Almost popping up like the symbol. but I really don't know