He is around and dynamic character because throughout the story he realizes Junior is not betraying him but just trying to create a better life for himself, and finally Rowdy accepts that.
“I always knew you were going to leave. I always knew you were going to leave us behind and travel the world. I had this dream about you a few months ago. You were standing on the Great Wall of China. You looked happy. And I was happy for you.”
–Rowdy to Junior