Casta Fierce is a 2014-introduced and all-around character. She is a witch, specifically the daughter of Circe, and the lead singer of The Spells. Aside from Casta, The Spells consist of three girls who are uniquely immune to Casta's magic. Like her mother, Casta can turn anyone into any animal, but she has limited control over her powers. One misspoken word or unfortunately phrased sentence is enough to turn anyone hearing it into the matching animal. This has put a damper on her singing career, but Casta and her band keep making music as they look for solutions. Casta is a close friend of Catty Noir, a colleague of hers.
Casta has long black hair with purple and orange highlights on her fringe and green skin. She also has a beauty mark. Her outfit consists of a sparkly dress that is purple and orange that cascades into a flowing orange and black net with a black belt. She has on spiked purple boots, a fishnet arm warmer, and holds a purple broom with orange ribbons and a purple microphone.
Casta is a close friend of Catty Noir, a fellow but younger singer who has put her career on pause to return to a regular life. Supposedly, Casta also is close with her fellow band members. She is also best friends with Operetta.
- September 22, 2013: Mattel requests the trademark for Casta Fierce.
- February 14, 2014: Casta Fierce is revealed during the 2014 Mattel Toy Fair Analyst Meeting.
- March 31, 2014: The connection between the trademark and character is confirmed by J.S. Sporting.com's listings.
- May 29, 2014: Casta Fierce's profile is published on the Monster High website and promptly removed.
- May 29, 2014: Casta Fierce's profile art is revealed.
- June 05, 2014: Casta Fierce's profile is re-published on the Monster High website and promptly removed.
- July 24, 2014: Casta Fierce's profile is re-re-published on the Monster High website.
- Late August, 2014: Casta Fierce's debut doll is released as a lone 'Signature' doll.
- The name Casta Fierce is inspired by Sasha Fierce, an onstage alter-ego of Beyoncé. Her hair is even styled the same way as Beyoncé's was in the video clip of "Single Ladies (Put a Ring on It)", which is a song released as part of the I Am... Sasha Fierce album.