Anastasia and Drizella

Anastasia is an antagonist that appears in Castle of Dreams in Kingdom Hearts Birth by Sleep. One of Cinderella's wicked stepsisters, she is loyal to Lady Tremaine, her mother, and will do all in her power to get in cohorts with the handsome Prince Charming by making Cinderella's life miserable.

Origin
Anastasia first appeared in the 1950 Disney film, Cinderella. She was cruel and unkind to Cinderella, and does not want her to go to the ball. When the footman tries to fit the glass slipper on Anastasia's foot, she at first thinks her foot fits, but it does not. Anastasia later appears in the film's sequels, Cinderella II: Dreams Come True and Cinderella III: A Twist in Time, as well as the TV series, Disney's House of Mouse.

Trivia

 * Anastasia is one of the few film antagonists featured in the Kingdom Hearts series who is not a boss.
 * As seen in Cinderella II and Cinderella III: A Twist in Time, Anastasia was shown not to be as cunning or wicked as her mother and sister. Both movies show her seeing the error of her ways and instead being Cinderella's friend.