Hayate Yagami is one of the main characters of and introduced in Magical Girl Lyrical Nanoha A's. Notably, she is voiced by Kana Ueda in a strong Kansai dialect. Hayate is a cute, kind-hearted orphan in a wheelchair who is actually the mistress of the Book of Darkness and the Wolkenritter (Signum, Vita, Shamal and Zafira) but is unaware that they are causing harm to other people. Hayate's magic works slightly differently than that of Nanoha or Fate, in the fact that the closest thing she has to "familiars" are the Wolkenritter and her "weapon" is the Book of Darkness. Although an original character, Hayate may have been based on Feng Lianfei (nicknamed "Len") from Triangle Heart 3. Both characters have short hair, speak in Kansai dialect, and are good at cooking. Hayate wears an X-shaped red ornament and a yellow one shaped like two parallel stripes in her hair. Her Knight Armor, however, removes the red one but reconfigures the yellow one into an X shape, just like Reinforce Zwei's hair dec. Hayate is a kind individual who treats those who would otherwise not be considered human well, and who believes that causing harm to others, whatever the reason, is unacceptable. She is cheerful most of the time, but often hides any pain she is feeling from those close to her. It is revealed in the sound stages that she enjoys fondling the breasts of her female friends or subordinates, but only if they would willingly let her.