Kallen Kozuki

Lore & Background

Kallen is half Japanese and half Britannian, but believes herself to be Japanese at heart due to being born and raised in Japan by her mother. She prefers to be known by the name "Kozuki," her mother's maiden name and her original birth name. Her father is a Britannian and her mother is an Eleven; her father comes from a prestigious Britannian family, from which Kallen benefited after she was officially acknowledged as his heir after the invasion of Japan.

Due to her parents never marrying she was considered illegitimate before this point, and spent years treated as and living as an Eleven before her father claimed her as his own during her middle school years (approximately 1–2 years before the start of Code Geass R1). Because of this she bears no personal attachment to the "Stadtfeld" name, seeing it as a fake identity; in Japanese credits and apocrypha she is exclusively titled as "Kallen Kozuki" as a result.

She attends Ashford Academy, where she later becomes a member of its student council and is one of its most outstanding students. Her brother, Naoto Kozuki, with whom she had a deep connection, was a former leader of her resistance cell before his death. Both Kallen's stepmother, a Britannian, and biological mother live with her in the same house, but her biological mother is employed as a maid and is often mistreated by both her stepmother and Kallen herself.

After her biological mother is arrested for using Refrain (a fictional drug which lets people think they're reliving the past), Kallen changes her views and decides to fight against the Britannian Empire not only for her brother, but to fulfill her new wish for a world in which she can live happily with her biological mother.

Reader's Guide

Kallen leads a double life as both a normal Britannian student and as a member of a guerrilla resistance group against Britannia, which is later reformed into the Order of the Black Knights by Lelouch Vi Britannia. In school, she portrays herself as a feeble-bodied high school student careful to follow every formality and goes by her Britannian name of Stadtfeld. However, her personality becomes very forceful and strong-willed when she acts as a resistance fighter.

As a running gag, Kallen ends up nude or immodestly dressed in front of other people on numerous occasions: Lelouch sees her naked after she accidentally pulls back a shower curtain in the third episode, Suzaku sees her bathing under a waterfall when they are stranded on Kamine Island, she is forced to dress in an immodest bunny costume at the start of the second season (to plant a tracking device on Lelouch), and she walks in on a meeting between C.C. and the Chinese ambassadors wearing only a towel when intending to complain about the previous situation to C.C. (claiming that the operation would've gone faster if C.C. was wearing the outfit).

In an interview reported by the anime magazine Newtype USA, seiyu Ami Koshimizu talked about the difficulty of voicing Kallen because of the double life that her character leads. Certain aspects of Kallen's character such as her girlish naivete and competitiveness made it easy for the voice actress to relate, even to the point of admitting that in some ways they act very much the same.