Helix will be affected though many may not notice it. I think there is potential for violence (If you're Okita or certain people he wants to punch) cause he won't be holding back or behaving to keep Aidan happy.
But more than anything he will be inclined to tell the truth about himself/his feelings or just generally less likely to lie about anything. So if your character is particularly inquisitive or just NEEDS TO KNOW THINGS. NOW IS YOUR CHANCE TO GET ANSWERS INSTEAD OF FRUSTRATING DODGING OR INSULTS!!!!
So step right up for that...
Haine well, uh, this is a tough one cause it's potentially REALLY BAD for the dome. I see Haine just losing the will to keep his darker half at bay. So basically the "Dog" personality would take over. That doesn't mean he will go into a mindless blood thirsty killing spree thankfully, but there is a chance for seemingly random bloodshed out of pure boredom.
Basically his other self is wild and insane, he doesn't give two shits and will attack anyone if he's bored. He'd go looking for a fight, for violence. He won't necessarily destroy things, he'd be more interested in just fucking with people.
THERE IS A SOLUTION if this is not something that should happen... A)Haine can sense his control slipping during the night, he rarely sleeps well so I think he could try to fight it off until he stops caring about fighting. And basically go to the DF HQ and say LOCK ME UP NOW!
or B) one of the DF who would still care to do so can attempt to take him down and lock him up.
Of course Haine will still be in the back of his own head so I could always say THAT part of him keeps the Dog from flipping out and killing anyone as well.