What's the best representation of the Devil humans ever created?

Humans have always tried to represent evil in books, video games, and almost every fictional work they created. However, I believe the first true representation of evil came with the Devil in the Bible, thousands of years ago (as you already know). But aside from Lucifer/Satan in the Bible, who are real (or at least this is what Christians like me believe), what is the most accurate fictional character who represents the Devil? I want to ask you this because I'm writing a book about it, and since you're Christians (Like me), you could help me with this?

Some examples up here