- Be unforgettable - for you and your readers.
- Be a joy to write for. You will know the character inside out so know how they will speak, the kind of things they will do, and how they react when under pressure.
- Enable you to develop the plot in unexpected ways. Because you know this character so well, it makes it easier to explore their hidden depths and so expand the plot of your story. Those hidden depths will spark other ideas for what this character could be capable of.
- Be a spark for other characters in your story to react to/against. This tells you who are the friends and who are the enemies of course. But your villain has to have a decent heroine to react against. And the hero needs a decent enemy. There has to be conflict in a story. Without it, there is no story.
- Have the motivation/stamina and so on to finish the quest. Good characters don't give in easily. They'll make a decent fight of it whether they are the hero/heroine or villain. A really good villain will enable most readers to work out where that villain is coming from with regard to why he is acting the way he is and even be sympathetic when he/she loses!
I'm Allison Symes and write fairytales with bite, especially novels and short stories.