Sofia the Worst

Sofia the Worst (also known as Bad Sofia) is an evil copy of Princess Sofia who appears in the Sofia the First episode "Sofia the Second". Like the real Sofia, she is voiced by Ariel Winter.

Personality
She looks and sounds like the real Sofia but her personality is the complete opposite. Instead of being kind and caring, she is spoiled, rotten, mischievous and only cares about having fun and causing trouble, especially if it means causing harm to people just to get it.

Her troublesome nature is due to the copying spell being cast incorrectly, so if the spell was cast correctly, she would have been exactly the same person as the real Sofia, both in appearance and personality.

Background
When Sofia wanted to go to the hootenanny but had to stay behind to keep Lady Joy company, she used a duplication spell to create a copy of herself. At first, the copy seemed very happy to play with Joy while the real Sofia went to the hootenanny. She didn't realize that she messed up the spell and created a Sofia that is bad and rotten to the core.

The clone quickly began to cause trouble and after ditching Lady Joy, she went to the hootenanny and started to cause even more trouble. However, her fun was halted when Sofia locked her in a barn. She managed to escape, determined to get back at the real Sofia.

She was soon found out by Roland, and Cedric used his magic to send her away, never to be seen again.

Trivia

 * Sofia the Worst is one of many characters who are opposite doubles to the hero/heroine in other TV Shows, like Negaduck from Darkwing Duck, Evil Jake from American Dragon: Jake Long and NomiRandy from Randy Cunningham: 9th Grade Ninja.
 * The name is a reference to the lyrics in the song from Robin Hood, "The Phony King of England": "Too late to be known as John the First, he sure to been known as John the Worst".
 * The only difference between the real Sofia's and Bad Sofia's appearances is that the real Sofia usually wears a purple dress while Bad Sofia's dress is pink. Plus, Bad Sofia removed her amulet and gave it to Joy.
 * In the book Sofia the Second, Bad Sofia is referred to as Pink Sofia due to the color of her dress.
 * Strangely, Bad Sofia was able to understand Clover despite her amulet not being real.