Beth has long chestnut brown hair that ends at her chest. She has light greenish-yellow eyes, a fair skin tone and freckles that sit on her cheeks.
She wears a small yellow short-sleeved shirt that ends just below her chest, exposing her midriff. She also wears blue shorts bound by a green belt, yellow knee-high socks and yellow sneakers.
Beth was regarded as a studious, silent, aloof and often lonely person. She was also very insecure and had been bullied for her aloof and quiet personality. But like any human being, she can snap and can be very scary when enraged. She is shown to be much more vocal on things especially when she felt that the Winx were intruding into her life and tried to steal her friends (the Trix) away.
As she is still young, she has a tendency to be blindsided by words (which were used against by the Trix) but she is not a close minded person and capable of overcoming her insecurities, starting by being happy with who she is. All she needed was encouragement.
Beth does care for the people she loves and despises the idea of causing them to worry. She is also prone to tears.
#96: Fairy for a Day
Beth makes her debut in the beginning of Fairy for a Day walking just behind Bloom, Mike, and Vanessa within another crowd of mall-goers. Soon enough, Beth unleashes her Impulsive Breeze onto the unsuspecting crowd, declaring that she will now show the people of Gardenia what she can do. This acts as a major cry for attention from Beth who goes on to create and maintain a large and powerful tornado in the center of the mall as she goes on about how she has always been ignored and left unheard, but now it should be impossible for the people to ignore her.
Seeing Bloom rush in to rescue the mall-goers with her Wing of the Dragon spell causes Beth to set a nearby bookstore ablaze! She then storms off elsewhere, leaving Bloom to deal with the fire and the possibly victims stuck inside.
After putting out the fire and saving the people that were caught in it, Bloom is approached by Peter who thanks her and expresses his surprise over seeing Beth cause such destruction. When Bloom asks if Peter knows of Beth, Peter goes on to claim that he never really noticed Beth until just then, and admits to assuming that Beth just preferred studying in solitude beforehand. He then goes on to give Bloom Beth's address and hopes that she has not gotten mixed up in any major trouble.
Shortly afterwards, Bloom returns to her loft with the Winx, explains to them of Beth as well as what happened at the mall, and heads for Beth's house to get more information on her. At Beth's home, the Winx learn from Mr. McGraw, Beth's father, that while she maintains good grades, she is very closed off and does not talk to anyone. On the other hand, Mrs. McGraw believes that her husband is simply overreacting and throws the Winx out of the house, prompting them to search for more clues about Beth at her school.
While at the schoolyard, the Winx learn that Beth had not come to school, that she has never had any friends due to always being alone and only ever speaking to others when spoken to. A pair of boys within the playground overhear the Winx's conversation with a girl and go on to claim that Beth is nothing but a nerd that no one would want to be friends with. When Flora asks if shyness could be a problem of Beth's, one of the boys goes on to claim that it may be one but her main issue is that she is supposedly crazy. In fact, she would often vow to make whoever teased her pay, which had earned her the nickname "Half-Mad Beth." She even claimed that she would become a fairy for a day to do so!
Shortly afterwards, Beth comes bursting through one of the walls surrounding the school and immediately goes on a rampage to make her classmates pay as promised. Beth quickly directs her rage onto the boy who calls her "Half-Mad Beth" before being confronted by the Winx and, as she overwhelms the Winx with the negativity radiating from her magic, Beth receives sudden praise and adoration from her classmates, who have come to admire her fighting spirit. As Beth clears the scene, her classmates accuse the Winx of "unfairly ganging up on her," having experienced the pull of negativity caused by Beth's magic.
Later that day, the Winx conclude that someone interested in spreading negative magic all over Earth must be behind Beth's fearsome magical strength, and decide to head back to Beth's home suspecting that her parents have more to tell.
Meanwhile, as the sun sets over Gardenia, Beth arrives at Gardenia Beach an approaches a strangely-formed cave that tells her that her powers will be gone by the day's end according to an earlier agreement.
The cave then asks if Beth enjoyed being a fairy for a day but before she can answer, it tells Beth that it could make her powers last for a lifetime and asks if she would like that. Hesitant, Beth claims to think that she would, so the cave tells her to return by midnight and embrace the negative magic if she truly desires magic powers for the rest of her life. Beth is left at a loss for words, which prompts the cave to tell her that she still has time to think this over but must do so before midnight, as it will only have three minutes to bestow Beth with lifelong powers since the moon will only be in the right position for such a short time frame. It then dismisses Beth, telling her to leave and think about the offer.
On her way back home, Beth finds that she cannot fully trust the voices of the cave despite how tempting being a fairy for the rest of her life sounds and, even if they have kept their promise to Beth, she cannot help but find them to be strange.