Despite Double Talk and Parting Ways not necessarily being friends or even allies, they're both the bad eggs of the group, giving the pair the name The Troubles.
Double Talk is underhanded and cruel all for his amusement. He goes out of his way to cause drama and seems to soak up the resulting fallout like a plant soaks up water. In short, he is someone not to be trusted. He'll be a friend one day and an enemy the next. It's not clear how Double Talk ended up being so devious. Perhaps he was just "born" that way, but most likely, something from the Outside shaped him into the natural liar he is today.
His Whisper is "Speak" which causes the spread of misinformation, which causes all sorts of accidents. His Second Form is rather useless in battle having no real attack or defensive power, but that doesn't stop him from spectating and commentating on the action.
Parting Ways could be seen as Double Talk's opposite. He rather fight first and ask questions never. He's vicious and sadistic, taking pleasure in fighting and physically hurting others. In truth he puts on a brave act to cover up any emotions he doesn't want to deal with, like sadness or confusion. He really rather fight than do anything else.
His Whisper is "Kill" which leads to "heat of the moment" murders. His Second Form reflects his lack of reservations of killing, as his body is made up mostly of knifes. He is the most powerful Voice in terms of raw physical strength. In fights, his love for killing can sometimes overtake him so that even after a threat is put down, he'll continue to search for something more to kill.