Ok, so I've been at this guy forever and I keep writing around him because I just can't seem to make him real in my mind or decide what happens with him. The funniest thing, the whole story initially started with the original version of this character but he's changed so much and his role in it become so different he's become a sideline. The 2nd of two main characters basically goes awry in life because of this guy, he's a serious abuser. I have ideas about some things he does in the story in terms of abusive acts but that's it. I don't know how to give him life! I did some research on stories involving abusers but it wasn't really a help. There needs to be a progression of his badness like in the beginning as if his niceness was a negation and ultimately a plot to take advantage of the main character. He's not a good guy, he's messed up but the original reasons for him being so I feel aren't strong enough anymore since the story has progressed. He's a drug addict, could that be enough? There is a scene when he kills the character's cat on purpose. I'm not worried about him being too nuts because he sort of follows a rebel anarchist persona (its the 70s) but I am worried about making it believable. What are some ways I could get a better grip on this task? Both in bringing him to life and creating effective turning points that progress the seriousness of the relationship?