Diana Cavendish

Diana is serious, composed, and erudite. Being descended from a prestigious line of witches back to ancient times, she is exceptionally devoted to her magical studies and to the tradition and history of magic. Her status as Luna Nova's best student cannot be solely attributed to heredity — she has a self-disciplined and maturity far surpassing the average teenage girl. She is confident in the superiority of her philosophy of magic where it differs from Akko's, one of the reasons Akko considers her to be her rival (although Diana never did). Like most students, she claims Shiny Chariot to be a fraud, but in actuality is hinted to have been a fan of her. This was confirmed in "A New Beginning" where she was in the midst of the crowd in the flashback and in "Cavendish". In "Intelligence and Sensibility", as Akko expresses her feelings of hope that Diana will be able to achieve her goal for her mother's wish and love her and the academy with all her heart, Diana starts to feel comforted and understood at that moment. In the following end, she and Akko became friends at that moment. Despite appearing to be callous and condescending, Diana is not heartless nor arrogant: when she chastises other students it is not out of malice but frustration, she cares about the success of others studies and not just her own. This concern contributes to her dependability, she is willing to help out other students to her best ability whenever they ask. Due to her pride in her own abilities and a strong sense of responsibility, she refuses to take credit for other's doing and always admits her mistakes, although she's unable to speak up to teachers due to the trust they have in her (such as being unable to tell Ursula that she was the one to free the dragon in the first OVA, and being unable to tell the teachers that it was Akko who awoke the Pappiliodya in the second episode of the TV series). The extent of Cavendish's selfless sense of duty is revealed in the eponymous episode — she is ready to leave her beloved Luna Nova Magical Academy and give up the remainder of her childhood to preserve her family's legacy. She holds no contempt for Akko for being chosen for the role she sought to fulfill all her life and wishes her nothing but success. Her behavior at Luna Nova is seen in a more noble light — she didn't brag about being descended from one of the Nine Olde Witches and kept her orphanhood secret, wanting neither unearned respect nor pity. Despite her seeming to be very prideful, she has insecurities: even with her prestige and high social standing at school, she is too embarrassed to admit anything less than contempt for Shiny Chariot. This could explain why she surrounds herself with sycophants, although she does not let Hannah and Barbara praise her excessively.

Diana is a young witch with pale skin, light blue eyes, and platinum blonde hair with side-swept bangs and tea-green highlights. She is considered very beautiful. Her Luna Nova uniform consists of the standard tunic, witch hat, shoes, and stockings. The band on her hat and shoes are colored blue, along with her sash. Concept artwork reveals that Diana originally had yellow blonde hair with pale yellow highlights.