Kallen Stadtfeld

Age: 17 (first season), 18 (second season)
Date of Birth: March 29, 2000 a.t.b. (Aries)
Blood Type: B
Nationality: Britannian-Japanese
Height: 171 cm (5'7")
Occupacion: Soldier, Knightmare Pilot, Student, Terrorist (Formerly), Captain, Britannian Noble (Formerly)
Allegiance: Order of the Black Knights
Position: Captain of Squad Zero
Knightmare: Glasgow/Burai (Custom Red), Guren Mk-II, Guren Flight-Enabled Version, Guren S.E.I.T.E.N. Eight Elements

'Kallen Kouzuki' (紅月カレン Kouzuki Karen) is one of the tritagonists in the anime/manga series Code Geass. She is officially known as 'Kallen Stadtfeld' (カレン・シュタットフェルト Karen Shutattoferuto), and goes by this name at school, but prefers her mother's maiden Japanese name during her revolutionary (now military) activities.

Kallen is a strong-willed, determined, loyal, and brave individual who can also be quite short-tempered, forceful, and somewhat impulsive. Despite her uncompromising attitude, Kallen is quite sensitive, compassionate, and genuinely gentle.

While being both Japanese and Britannian, Kallen could live everyday life. However, she refused to fully accept her Britannian side as it would mean abandoning her Japanese friends, people, and self, thus making her one of the few selfless characters in all the series. On multiple occasions at the beginning of the series, she had claimed that she hates Britannians. However, that was an exaggeration, as Kallen caring about Britannian civilians on multiple occasions.

Character Background:

First Season:

Second Season:

(Source: Code Geass Wiki, Wikipedia, Heroes Wiki)