OVA
Description
In Code Geass: Nunnally in Wonderland, the character C.C. takes on the role of the Cheshire Cat, a fitting choice given her enigmatic and unpredictable nature. The OVA reimagines the cast of the main series as inhabitants of a fantastical Wonderland, created by Lelouch to entertain his sister, Nunnally.

In this role, C.C. is portrayed as mischievous and playful, embodying the trickster spirit of the classic literary character. Unlike many other characters who are forced into their parts and seem unhappy with them, C.C. appears to genuinely enjoy her assigned role, being one of the only individuals in Wonderland aside from Nunnally who is pleased with the part she is playing. Her physical appearance remains consistent with her original design, featuring long, light green hair and golden eyes, which suits her new enigmatic persona.

Within the story's narrative, the Cheshire Cat's primary motivation is to tempt Nunnally to stay in Wonderland forever. She tries to convince Nunnally to abandon the idea of returning home and to simply remain in this whimsical world. This directly creates a source of conflict with Lelouch, who is the narrator of the story and is fiercely protective of his sister. Her suggestion to Nunnally that she should "ditch her overly doting brother" provokes Lelouch's anger, as he intends to keep Nunnally under his care and does not appreciate the interference in his plan to entertain her.

Her key relationship in this story is with Nunnally, as the Cheshire Cat is a guide of sorts, albeit one with a selfish agenda to keep Alice in Wonderland. Her dynamic with Lelouch is also crucial, defined by his frustration at her attempts to subvert his story. As an adaptation, the character does not undergo significant development, as the OVA is a self-contained parody. Instead, it relies on the audience's existing knowledge of C.C. from the main series, using her iconic personality traits to enhance the absurdity of the alternate universe.

Notable abilities specific to the OVA are not detailed, but her role implies the Cheshire Cat's traditional powers, such as appearing and disappearing at will to offer cryptic advice. More broadly, the character retains her association with the main series' lore, including her immortality and her role as a bestower of Geass. The story is essentially a comedic diversion where Lelouch wastes his Geass power to force the characters into his tale, and C.C. embraces the chaos with characteristic amusement, particularly due to her love of pizza, a recurring trait from the original anime.