Even though she is kinda evil already.
Also I think,
Matt, Claire and Mohinder.

I think he'll turn out like his dad.

he is the obvious choice

He's got a controlling tendancy. I think Angela's motives are misleading, pointing to an evil direction, but not actually there. Peter I think has learned his lesson, though his character will probably be harder than it was the first season.

I can also see it be Matt. Maybe Claire, based a little on the trailer, but since Peter had a scar, that might be another futuristic episode.

Niki..whoever she comes back as.

In the promo she has brown hair and is pointing a gun to peter :( but i think its one of those "future" episodes. well I hope IF SHE KILLS PETER SHE WILL DIE! I love him to much <3

She is already evil.

But, if not her, it'll be Nathan, I think.

He scares me with the whole mind control thing. He seems like the most likely person to turn evil, but hopefully he won't because I really like him.

According to Hayden, West isn't going to be in this season at all! *happy dance* That kid was a creep.

Also Matt and Elle.

His power turns him evil,also Elle,Nathan, and Angela arent exactly model citizens