Well, I don't think Daniel would ever be the bad guy. When he makes mistakes, it's always for an understandable reason. Like in the last video, he was really annoying to Bree, but he always meant well, you know? I think if Daniel 'betrays' someone, it will be for all the right reasons.
Also, while I still think there's something to Jonas he isn't sharing, and I think something will come up involving his parents and his past, I don't think it's anything that would denounce him as a 'good guy' - like he'll secretly be working with Tachyon and Brother, or something. But that wouldn't be betrayal to Bree and Daniel, because he'd be against the Order.
However, I think Bree is the one I trust the least. I think she's smart - like, brilliant (like EINSTEIN smart..

) - and I think she acts naive and ignorant. I think there are things in her past that she either represses because they were traumatizing, or just doesn't talk about them because they make her seem bad. She acts like the victim. The poor, confused, innocent girl being chased by a cult for god knows what reason. But I think she knows why. I think she knows why, and I think she knows how powerful they really are. I think the Order has political, legal, medical, psychological, militaristic, economic, and whatnot influence, and Bree knows it. And I wouldn't be surprised if Bree has some kind of repressed memory about an abduction or some kind of engineered birth that her mind is now throwing up.
I'm not saying I think Bree is bad, I just believe she is the most likely to turn out bad. I don't think it will end that way though. But I think she has to share a lot more, otherwise when and if we ever find out certain truths, we will all feel betrayed.
"Beneath this mask there is more than flesh. Beneath this mask there is an idea, Mr. Creedy, and ideas are bulletproof."
-- V For Vendetta <3