C.C.

C.C., is the tritagonist of Code Geass: Lelouch of the Rebellion. C.C. is not her real name; she involuntarily reveals her real name to Lelouch in her sleep, but it is muted so the viewers cannot hear it.

C.C. is part of the All Worlds Alliance and serves as an assistant for Lelouch Lamperogue.

Appearance
C.C. is a girl with long, almost waist-length light green hair and golden eyes. She is of average height, being slightly shorter than Kallen. She has a scar under her left breast that resembles a Geass sigil.

C.C.'s outfits are both plentiful and varied. She is seen wearing a wide assortment of different clothes, often dependent on the situation or the time period. She often wears Lelouch's own clothes, including his Zero costume whenever Lelouch required a decoy.

C.C. primarily wears the outfit she initially appears in - a white straitjacket used to restrain her during her time as a test subject for the Britannian Empire, prior to the beginning of the series. These suits contain many means of restraint, including various straps and zippers, and a high collar capable of gagging the wearer. Not set to fully bind the wearer, the suits have rather long sleeves that flare outwards closer to the cuffs. A number of these straitjackets are seen in the Geass research laboratories.

Personality
C.C. expresses little emotion throughout most of each season and behaves apathetically towards most. However, she does express some emotions later in the first season and at several points in the second when in the presence of Lelouch. When she locks her memories away, she regresses to how she was hundreds of years ago, fearful and open. However, when she regains her memories, her personality reverts back.

Kallen suspects that C.C. is in love with Lelouch, which made C.C. unusually flustered. Backing this up is that C.C. never made Lelouch take her immortality per their contract and worries she altered his fate.

She loves to eat pizza.

Abilities
Code of Immortality - C.C. is an immortal "witch", neither suffering from age nor capable of being killed by conventional means. She has been shot fatally a number of times, been crushed by water pressure, burned at the stake, subjected to the guillotine, placed in an iron maiden, and stabbed by spears all of which she recovered from.

Telepathy - C.C. can telepathically communicate with Marianne vi Britannia. Whether this is an ability resulting from C.C.'s Code, Marianne's Geass, or Marianne's state of un-death (and, as a result, being "near" the Collective Unconscious) is unknown.

Other Abilties

C.C. is a capable leader, able to rescue Lelouch from Britannian traps, handle firearms with some proficiency and seems to be a skilled unarmed fighter as well. She is also an accomplished Knightmare pilot, able to pilot both standard Knightmare Frames as well as co-pilot the Gawain with Lelouch.

Trivia

 * In the AWA fics, C.C. is in a relationship with Lelouch.
 * In the AWA fics, C.C. seems to be good friends with Blinx and Parappa the Rapper.
 * Amber from Darker Than Black resembles C.C. as both are mysterious girls who have an unknown connection to the main character (Hei and Lelouch).
 * In R2,C.C. added two horns on her Ashford Student disguise, which make her resemble to Chachamaru Karakuri from Mahousensei Negima series.