Do you think Peter Petrilli and Senator Petrilli will be back?

Sure they will be back..Peter is the main actor.heroes need him back..

I believe Peter and Nathan Petrelli will back in season two. They both have an important roles to play.

They have to... they are central characters that got me hooked up to Heroes in the first place. As a fan of the series, and I am sure I am not alone, it'll totally upset me if they don't. But Series 1 ended with lots of openings. Both the brothers and even Sylar are kinda missing. Let's just wait and see what happens. Hope we won't be disappointed.

for sure petrelli brothers would be back, since in the future peter is still alive after the explosion but with a scar, and nathan became the president.... so they'll be back....