and it's hard to dance with a devil on your back/so shake him off

Ruairí was a small, harmless nightmare once.

He lost a friend, went charging after her, and found himself trapped in a much stronger nightmare.

While he escaped, eventually (or rather, was rescued), the experience left him changed. Twisted into something Else. 

Slowly trying to come to peace with himself and trying to find his way back to... well, he'll never be what he used to be again, but maybe he can find his way to something he can make peace with.

A shameless flirt, puts on fronts. Afraid to let himself be vulnerable lest he be stabbed in the back. Finds manipulation more safe a way to deal with people than being honest, but he's trying to break those old habits.