(シー・ツー, Shī Tsū, pronounced C2) is the pseudonym of a fictional character in the Code Geass: Lelouch of the Rebellion franchise by Sunrise.

Introduced as a captive human test subject of the villainous Holy Britannia Empire, C. C. is revealed to be an immortal young woman with special powers called the Geass.

Sardonic, stubborn, and mysterious, she can give Geass powers to others, which she does to main protagonist Lelouch Lamperouge.

She becomes an ally and protector of Lelouch, at times piloting a mech and leading the paramilitary group the Black Knights to do so.

She later assists Lelouch at destroying other Geass users misusing their powers, including her former students, and supports the regime changes that follow.

(シー・ツー, Shī Tsū) was created as a fictional character for the Code Geass: Lelouch of the Rebellion anime series by Sunrise, who first appeared in 2006 with the premier of the franchise.

In the first season she mainly wears a white straitjacket bondage suit,[6] which the Britannian Empire had used to restrain her for tests prior to the series.

[9] She has worn Lelouch's own clothes, including his Zero outfit, to serve as a decoy and save him from situations.

The Geass power originally allowed her to make anyone around her love her, before leading to her being immortal and immune to both age and conventional injury.

Calm and collected, she is strongwilled and pays little mind to inconveniencing others, and at times is with-holding of information.

Scornful of her immortality, she is lonely and isolated, although she shows fondness for the main protagonist Lelouch Lamperouge.

gains immortality, a shock sequence in the first-season finale shows memories of her past, including repeated "deaths" of different types spanning centuries.

[23] She claims to have entered into magical Geass contracts with hundreds of people over her lifetime, in futile attempts to lose her immortality.

One of her previous contracts was with the late Imperial Consort Marianne, the mother of the lead protagonist of Code Geass, Lelouch Lamperouge.

Years later she is captured by a Britannian envoy in Japan, which takes an interest in her immortality and intends to bring her to the Imperial city of Pendragon in North America.

Early in the series, Osaka is bombed and a "top-security asset of the Britannian government," or C.C., is stolen by terrorists hiding in the Shinjuku Ghetto.

[26] Afterwards she keeps an eye on Lelouch's missions as his rebel alter-ego Zero, even wearing his clothes and impersonating him when a situation becomes life-threatening.

[28] When the Black Knights gain possession of the Knightmare Frame Gawain, she becomes its pilot while Lelouch operates the weapons.

[29] In the season finale, she uses the Gawain to battle Jeremiah Gottwald's Siegfried, to allow Lelouch to save his sister.

is in charge of the Black Knights at the start of the second season, where she and the others plan an operation to free Lelouch's memories from the Emperor of Britannia.

enter the mystical Sword of Akasha spirit realm, she reveals to him that her greatest wish is to die by giving up her Code.

Lelouch attempts to stop her and save her, and in doing so, her memories of everything after the day she acquired her Geass are lost, reverting her to a frightened slave girl.

[33] Later, the spirit of Lelouch's mother, Marianne, possesses the body of Anya Alstreim and locates C.C.

The two then leave for Kamine Island to re-enter the Sword of Akasha, rescuing Suzaku Kururugi along the way.

's presence allows the Emperor to begin the Ragnarök Connection and merge everyone into the collective unconscious.

intervenes in her Lancelot so he can escape, and battles her former Black Knight co-pilot Kallen Stadtfeld.

[38] In the events of the alternate universe of the 2019 film Code Geass Lelouch of the Re;surrection, which is built around the "what if" of C.C.

manages to fully restore Lelouch once they find a portal to C's World while helping save Nunnally and Suzaku from the Zilkhistans.

appears in the 2010 video game Another Century's Episode: R[51] in her Knightmare Frame, Akatsuki Command Model C.C.