Antagonist looks like a victim. With their cozy attire and sleepy expression, they look like they are recovering from something that may have happened to them.

I don't think Zig is the main hero, but the fairy god-llama who helps the hero on their quest!

Hero, absolutely, except at the end of the game you find out some dark secret about them that changes how you view the whole game.

Victim of the Main Villain from long ago, even as a ghost forced to work for them, until they decide to aid the Hero at the Pivotal moment which brings them peace.

I have to go with villain for this one with that evil green and red eyes, I wonder what this monster has planned for me?

I think you must be the hero, are you here to give me a fight?

Your avatar suggests to me that you are beyond mere human concepts of "good" and "evil," though in the pursuit of your own unknowable goals you may turn to dark means. Villain!

I'll go with victim. Zeapear's avi looks so innocent, something bad could be waiting in that bush behind her...