Evil characters have always populated the literary world, but some stand out. My choice for a real stand-out, beyond the pale, truly evil character is Dolores Umbridge from the Harry Potter series. A more cruel, self-righteous piece of work would be hard to name. She is humorless, delights in torturing others, is cowardly, and has no -and I really mean no- redeeming qualities.
She does drink tea, but we won't hold that against the tea, surely, any more than we'll hold her attraction to cats against the cats.
Here are video clips from some of her scenes, but you have to watch the movie The Order of the Phoenix and see her wickedness unfold through the film to appreciate the depth of her depravity:
Let's join Bleubeard and Elizabeth for tea and leave Umbridge out of our fellowship, shall we?
The photo at the top of the post is from the Harry Potter Wiki.