I actually have a pretty ambitious post in the works, but it's not ready yet. Maybe next week.
For now, let's think of all of those bits in the Oz stories that you may not notice when you're younger, but can become really odd or creepy when you grow up.
Like the Tin Woodman. After trading in his meat body for metal, he searches for a heart. Fairy tale character, or the ancestor of all cyberpunk?
Princess Langwidere: Someone who treats heads as just another fashion accessory. Up-and-coming trendsetter, or body horror?
Anybody got any others?