Well, he's constantly shown an inability to give a damn about anyone but himself. He can take powers without killing, but he kills because it pleases him (unless it's a kid, because that would just be cold). So I'd be very unconvinced if he joined up with anyone or decided to stop killing without a damned good reason.
Nathan inside him might be that reason--depends on the writing. But on a meta level, the writers are just grabbing at straws to keep Quinto on the show.
I forget- can Peter take more than one power away if he's come into contact with Sylar or can he only use multiple powers if he's in the room with Sylar?
In theory he should be able to take the power to take powers. But I think they're steering away from powering anyone else up like that.
Watching Peter beat the shit out of Sylar is surprisingly gratifying.
The torture, however, less so...
Seriously Claire, Doyle? Big Hug?
You really
are
Peter's niece.
Peter Petrelli is the Salon Letters of television characters.
Who was the actor playing the multiplier guy? He looked really familiar.
Also, I was expecting follow-up when Doyle said he needed to talk to Claire. Was he just making small talk?