She is voiced by Akeno Watanabe in the Japanese version of the anime and Stephanie Young in the English version.
A woman with an incredibly wild and slovenly appearance, she is the sect's talented decoder. She is a magician that utilizes Kabbalistic principles to create her own brand of magic. A self-proclaimed woman who has "as many convictions are there are stars," she is introduced in Toaru Majutsu no Index as an antagonistic character, but is a key ally to Touma and company later on.
She due to her traumatic experiences, she is a self-proclaimed woman who has "as many convictions are there are stars," and has been shown to be quite conflicted, wanting to take vengeance on her dead friend, but as well as not want to hurt others. What's consistent that is she just didn't want to lose her friend. Sherry is also a brusque woman, with a tone of voice that is described as being both of man and woman, as well as having a ridiculously heavy sound, as if she was songstress who damaged her vocal cords due to smoking. Despite knowing Kaori Kanzaki, she refers to her carelessly as a Far East girl, and to Lucia and Angeline as Nun number 1 and Nun number 2, respectively.However, perhaps it was this quirk that allowed her to quickly force Orsola Aquinas out of her oafishness when conversing with her in important matters.
In her free time, she sleeps in, and does sculpting, after renting out another room in the dorms for the sole purpose of sculpting, which she can get into to the point that she will forget breakfast.