Beth is the princess of the fairy world. She is very athletic, stubborn, and has strong magic power. Although she is also a Platinum Princess candidate, she left the Princess Academy after an evil force named Diabolos attacked her world. She is so determined to become the Platinum Princess that she once kidnaps Cocoloo and tries to force her to give up her candidacy.
As a result of difficulties she is suffering in her world, she refuses the offers of friendship from the other girls and regards them as her enemies. Due to this attitude, the residents of the fairy world regard her as dangerous. However, after many meetings with the other girls, Beth learns to open up and accepts the other candidates' friendship, for which the most thanks can go to Cocoloo. Diabolos was later defeated by the power of the heart of Yucie, Elmina, Cocoloo, Glenda and herself. Her father in a form of tree which supports the fairy world and trapped Diabolos inside him before the girls came to help defeat it, with Arc hurt! She also suffers from a curse that traps her in a ten-year-old's body, even though she is actually seventeen.