Or, "The Bad Guys Aren't All Bad"
Alright, Tangled is a good source for blog ideas regarding the bad guys/antagonist.
So, your bad guy(s)/gal(s) may be totally despicable human beings or other creatures. But remember, they're still people, whether human or not.
What do they want? Money? Power? To rule the world? That's well and good, but what do they like? What do they do in their spare time? Do they knit? Sew? Dance? Pet cats and laugh maniacally? Watch day-time television? You should know this, even if they don't do it on paper, but only when the focus is elsewhere.
When you think of your antagonist as a real person, they become more rounded. But when you see them as "just the bad guy", you stunt their character growth and they become flat and boring.
This is a short post, and I have become really bad at posting every day, but I promise I'll post every time I have something to say, and it'll be more than once a week, I hope.