I'm trying to make one of my antagonists in my story more than just a one-dimensional character. This individual is actually pretty evil, has done evil things in the past and plans to do more in the future. I'm having a hard time trying to flesh out this character. A lot of 'bad guys' in novels (and other forms of media) are written simply as 'they're bad, that's it.' I'm finding it hard to provide a reason why bad characters do bad things. This individual in my story does evil things because they like to do them. Why do they like to do them? Well, why does anyone want to do anything that they enjoy? Anyone got any thoughts on this?